Mobility Impairments
Switching Device



For most of us, the keyboard is the primary means of input to an IBM PC. For people with little or no use of their hands, the standard keyboard is not an effective means of accessing the computer.

SWITCHES, when used in conjunction with a hardware or software device providing input to the computer, allow a disabled individual to enter information into a computer. Switches connect to devices such as alternate keyboards, environmental controls and electronic commujnication aids.

A wide variety of switches are available. In most cases, a switch is available or can be designed for an area of the body or muscle group where the individual can produce an interntional movement or action. Examples of how switches may be activated include pushing small buttons or large plates, sipping and puffing on a tube, wrinkling the eyebrows, blinking an eye or making contact with a metal plate. Teh many types of switches available make it possible for a person with limited or uncontrolled movement to operate a computer.



4-Plate Switch

4-Plate Switch is a set of four switches housed side by side. Each switch is activated by pressing down on its rectangular plastic plate. An audible click accompanies switch activation. The activation pressure is 8 ounces.

4-Pneumatic Switch

4-Pneumatic Switch is a switching unit that accepts input from one sip-and-puff tube. Different combinations of light and heavy sip and putt serve to activate each of four switches. Any desired tube may be used; one is available as well from the manufacturer (extra). Switch activation is silent. The activation pressure for this switch can be 0.1 or 0.2 psi.

4-Pushbotton Switch

4-Pushbotton Switch is a set of four snap-action button switches housed side-by-side, each in a 0.5” diameter recess. Pressing each button activates one switch. An audible click accompanies switch activation. The activation pressure is 4 ounces. A 5-button switch is also available.

4-Switch Joystick

4-Switch Joystick is a joystick lever that may be moved in any of four directions. Moving it in a particular direction will activate one switch. This joystick is also available with an additional pushbotton switch. Activation pressure is 11 ounces.

5-Tread Switch Slot Control

5-Tread Switch Slot Control is a set of five tread Switches mounted in an arc array, with dividers between them. The user activates the switches by moving the arm (or other activator) into the appropriate slot and pressing down on the switch. Activation produces a click. The activation pressure needed for this switch is 5 ounces.

ABLE-2 Product Family

The ABLE-2 Product Family supports computer users with special needs in a systematic program in four parts: needs assessment, workstation family, focused training, life cycle support. Needs assessment focuses on vision-impaired/blind, hearing-impaired/deaf and neuromuscular impairment or para/quadriplegic. Computer users with visual impairments are provided with optical character readers, voice synthesizers, screen readers, tactile output displays and Braille devices. The workstation family may be configured with voice input, mouse, foot pedal, joystick and headpointer.

Air Cushion Switch

Air Cushion Switch is a sensitive air bellows which when depressed transmits a change in air pressure along a tube, activating a switch. The activation pressure for this switch is 2 ounces. When used for single switch input, the AID+ Me interface is required.

Air Cushion Switch (Single or Dual)

These switches consist of an air bellows with a tube leading to a switching unit. A light touch on the bellows sends air pressure to the switching unit where the change in pressure activates a switch. Switching units are available with one or two sets of bellows for single or dual switching. The bellows have a threaded hole for mounting.

Air Switch

This single switch is activated by a change in air pressure in a tube connected to it - activated by either a sip or a puff.

Arm Slot Control

Arm Slot Control is a semicurcular array of five lever switches, each in its own slot. The user can activate any of the switches by guiding an arm into the slot and then pressing down on the switch. Dividers between the switches prevent more than one switch from being activated at a time. An audible click is presented when a switch is activated.

Armslot Switch Controller (ASC-5)

The Armslot Switch Controller is typically used by a person with severe cerebral palsy to drive a powered wheelchair. It contains five paddle switches arranged so that poorly controlled arm movement cannot activate more than one switch at a time. The switch functions (typically forward, back, left, right and select) install in any slot in the configuration. An audible click is provided when a switch is activated.

Asaflex Model TS

Asaflex is a single-input switch operated by muscle tensioning. It can discriminate between voluntary and involuntary eyeblinks. It also includes sensors for switching by minimum force, pressure release, sound or vibration. Buzzer and timer are available.

Barrel Switch

Barrel Switch is a cylinder mounted horizontally on a wooden base. Switch closure is triggered by rotation of the cylinder.

Big Red Switch

ABLENET Switch 100 is a momentary touch switch made of shatterproof plastic. Mounting holes are included. The switch 100 comes with a six foot cable and a mini-phone plug connector. An audible click is provided when switch is activated. Activation pressure: 20-30 grams.

Body Switch (BS-1)

Body Switch, a large pushbutton ( 1 1/4” active surface), single switch operated by pressure from any convenient part of the body, comes with normally open contracts, but is also available with normally closed contacts. It may be activated with as little as 3 oz. of force, but can sustain up to 200 lbs. of force. It emits an audible click when activated. (Note: a dual body switch is also available.)

Button Switch

Button Switch is activated by pressing a button similar to a doorbell. The button is mounted on a rectangular base with suction cup feet.

Cap Switch

Cap Switch is a small switch controlled by pressing the top surface. Cap Switch provides auditory feedback upon activation. Activation pressure is 50 g.

Capacitive Touchplate Interface

The Capacitive Touchplate system has five individual capacitive touch plate channels. The touch plate is operated from the body’s capacitance and requires only contact - no pressure. Three versions are available that alter positions and sizes to adapt for limited range of motion or force output. The system can control communication aids or wheelchairs.

Clamp-On Bump Switch

Clamp-On Bump Switch is activated by 2 oz. of pressure on its tip. This switch attaches to a bed, chair, table, etc. and is activated by any convenient part of the body. Both momentary and toggle models are available.

Computer Keyboarde Switch

Computer Keyboard Switch is a small version of a computer keyboard that functions as a single switch. Pressing any key activates the same switch closure. This switch is designed to accustom the user to causing an event by pressing on a keyboard and cannot actually function as a computer keyboard.

Computer Plate Switch

Computer Plate Switch is a plate switch with a picture of a computer keyboard laminated to the surface of the plate. This switch is designed to accustom the user to striking a computer keyboard to achieve some effect, without the user needing to handle actual computer equipment.

Control Unit

The Control Unit allows operation of any two electrical devices simultaneously up to a 1700 watt capacity. One switch turns on all devices attached.

Cup Switch

The Cup Switch is a Cap switch “cupped” in a plastic base. The base provides a surface for easy mounting on table, pillow or wheelchair bracket. The switch is operated by pressing the top surface. The switch is 1.75”: in diameter, height 0.5”. Activation pressure is 180 g.

Cylindrical Touch Switch

Cylindrical Touch Switch is a switch activated by skin contact. Two surfaces on the switch can be contacted; each activates a different switch. Cylindrical Touch Switch may require a power supply (extra) to be operated with some devices.

Deuce

Deuce is a fully mobile, distributed ECU system that controls a standard or speaker phone, up to 8 ECU accessories, and an X10 remote control system. It may be configured to feed two switch closures to operate any two-switch device; the two signals may be used by a communication aid or computer to interpret them as Morse code or scanning control devices. A suitable adapter or interface is required.

Developmental Lever Control

Developmental Lever Control is a switch device with two levers mounted on a speaker which can plug into the auxillary port to control a tape recorder. The unit is mounted onto a flat object with a C-clamp (extra). The activation pressure is 4 ounces.

Double Push Panel

Double Push Panel is a pair of plexiglass panels mounted on a wooden base. Pushing either panel activates a switch; and audible click sounds when the switch is activated; activation pressure is 5 oz.

Dual Plate Switch

This switch is activated by pressing either end of a rocking plate. Pressing one end activates one switch; pressing the other activates the second switch. Activation pressure is 8 ounces.

Dual Pushbutton Switch

Dual Pushbotton Switch is a pair of snap-action button switches housed side-by-side, each in a 1.25” diameter recess. Switches are activated by pressing. An audible click is provided when switch is activated. The activation pressure required is 8 ounces.

Dual Rocking Lever Switch

The Dual Rocking Lever Switch is dual-operated by pushing on either end of a plate. One end activates one switch, the other activates the other switch. The housing is made of plastic, with rubber feet and a threaded hole for mounting. Dual Rocking Level Switch is available in two models: low or medium activation force. The activation pressure is adjustable.

Dual Tongue Switch (TS-2C)

Dual Tongue Switch is a small movement, dual switch operated by tongue, nose, chin, cheek, finger or other movement. The switch comes with gooseneck and table mounting hardware. Activation pressure is 1 oz.

Eyebrow Switch

This switch is mounted on a visor. A lever projects down in front of the forehead, resting against it. When the user wrinkles the forehead or raises the eyebrow, the switch is activated. An audible click is provided with switch activation.

Finger Flex Switch

Finger Flex Switch is a switch build into a partial glove. Bending fingers approximately 10 to 25 degrees activates the switch. The switch uses a 3.5 mm mini-phone plug as a connector.

Firm Grip Joystick Holder

The Firm Grip Joystick Holder allows easy use of the joystick for persons with limited or no use of one hand. Two straps hold the joystick in place, while four suction cups on the bottom of the device secure it to a flat surface in front of your computer. An optional plexiglass undersheet provides a workspace and assures a good hold for the suction cups.

Flat Air Cushion Switch

Flat Air Cushion Switch is a single switch consisting of a flat circular air bellows and a switching unit connected by a flexible tube. When the bellows is depressed, the change in pressure is transferred along the tube, activating the switching unit, which functions as a regular switch.

Flex Switch

Flex Switch is a single switch operated by bending the flexible rubber tip 1/2 inch in any direction. Flex comes mounted on an angled metal rod; the rubber tip can be removed and rotated. Activation pressure is 180 g.

Grasp Switch

Grasp Switch is a cylindrical switch activated by grasp pressure. The switch requires an activation pressure of six ounces to trigger a response. A 1/8” mini-phone plug connects the switch to the device or toy to be controlled.

Grip Switch

Grip Switch is a rubber cylindrical air bellows connected by a tube to a switching unit. Grasping the cylinder and exerting slight pressure activates the switching unit, which functions as a regular switch.

Hand Switch

This Easy Action Hand Switch is a 2” long lever switch designed to be operated by hand. It may be mounted on a gooseneck; activation pressure is 2 ounces. Interface to IBM Pcs and PS/2s is through AID+ ME.

Head Control for Wheelchairs

Head Control for Wheelchairs is a switching unit that uses four mercury tilt switches to trigger switch closures based upon six possible positions of the user’s head. The control unit is mounted on the user’s headband and plugs into the control box of the wheelchair. The six positions are FWD, REV, FWD RIGHT, FWD LEFT, REV RIGHT, and REV LEFT. There is also a neutral position. Each position makes a different momentary SPST (Single Pull Single Throw) closure.

Head Switch

Easy Action Head Switch is a lever switch designed to be operated by the hand or head. Padded lever is 3” long and is easily mounted on gooseneck with a clamp mounting; activation pressure required is 2 ounces. Interface to IBM Pcs and PS 2 is through AID+ ME.

Headband Switch

Headband Switch consists of an adjustible headband equipped with a switch that has a small paddle for a lever. The paddle rests on and must be taped to the forehead; raising the forehead muscles activates the switch. The activation pressure ranges between 1 and 2 ounces.

HeadMaster

HeadMaster allows persons who are unable to use their hands to perform computer functions. It performs all mouse functions; the headset and control unit work together to measure the rotation of the user’s head and translate it into cursor movements on the screen.

Infrared Switch

Infrared Switch is activated by the reflection of an infrared beam. The small unit that projects the beam can be mounted on a pair of eyeglass frames, and the harmless beam is directed at the eye. Sufficient lateral eye movement or blinking activates the switch. It may also be activated by movement of other body parts if attached properly.

ISCAN

The ISCAN Eye Slaved Poting (ESP) is a turnkey eye movement monitoring system designed as a communication aid for severely disabled persons. By looking, the ESP system operator can select one of 24 icons displayed on the PC screen; the icons allow the user to interface with the computer and/or the user’s external environment to spell words, turn on lights, etc.

Jelly Bean Switch

The Jelly Bean Switch is a momentary touch switch made of shaterproof plastic. Small (2 1/2” across) and sensitive to 2 - 3 oz. of pressure, this switch provided audible feedback when activated and is a compact version of the Big Red Switch.

Joystick

This joystick has a cylindrical handle and a thin base. Pushing the handle in each of four directions activates one of four devices.

Joystick Interface Control

The Joystick Interface Control is a four-microswitch, non-gated, eight-position joystick that activates switches individually or adjacent switches simultaneously. It is adaptable to communication aids using this kind of switching. The Joystick is of the “X” format; a variety of connectors, knobs and bars are available. An OFF/ON switch and power ON visual indicator are included.

Joystick with Pad Switch

Joystick with Pad Switch is a four position gated joystick, with four slotted directions of movement. The fifth switch is a pad switch used for control action. This switch requires an activation pressure of 200 g.

L.T. Switch

The L.T. Switch, designed for users with limited strength, is activated with 0.75 ounces of pressure and emits a click when activated.

Latching Pneumatic Switch

Latching Pneumatic Switch plugs into a 3-pin grounded power receptacle, allowing control of 120 volt appliances up to 10 Amps. The air cushion actuator can be mounted with screws, Velcro or tape.

Latching Puff Switch

Latching Puff Switch latches mechanically to an on or off position. No external power, batteries, or adapter box is needed. A puff of mouth air will set the switch and turn it off.

Leaf Switch

This switch has a protruding flat vinyl-covered metal leaf and holes for mounting. Flexing the leaf activates a switch. Two leaf lengths are available; activation pressure needed is 1 oz.

Leaf Switch

The Leaf Switch is a single switch operated by pressing one side of the leaf. The tip of the leaf requires 1/4” of movement for operation. The Leaf Switch has a removable 3” diameter foam pad. Mounting requires additional tubular mounting hardware. Activation pressure is 50 g.

Leaf Switch

This switch consists of a vinly covered flexible spring. When a very light, delicate touch is applied, the switch is activated.

Left/Right Rocker Switch

Left/Right Rocker Switch is a dual switch activated by pressing the plate on either side. Pressing one end activates one switch; pressing the other end activates the second. An auditory click is produces when a switch is activated. Activation pressure is 5 ounces.

Lever Switch

This switch is activated by pressing a padded lever. The lever must travel 0.006” for activation. The activation pressure required ranges between 4 and 8 ounces.

Lever Switch

This Lever Switch is a dual switch activated by pushing the lever in either of two directions; it automatically returns to the center-off position when pressure is off. Activation pressure is 100 g.

Light Touch Lever Switch

This dual switch has a short protuding lever. Pushing on the lever activates the switch. Moving the lever to one side operates one switch and moving it to the other side operates another switch. The activation presssure required by this switch is less than 4 ounces.

Lite Touch

Lite Touch, a light-activated joystick emulator, has four sensors that attach to each side of the computer screen. Up to four more sensors may be placed at the corners. An optical pointer, attached to the head or body, directs the first four sensors to emulate the directions of movement of a joystick. The additional sensors act as the “fire” button. The sensors plug into an external receiving unit which plugs into the computer’s joystick or game port. Lite Touch runs any program that uses a switch-type joystick. Lenses of different focal lengths are available for the printer. A word processing program that uses joystick input is available. The four sensors have mini-plugs attached; two may be used as dual switch input with PC AID available from DADA.

Magnetic Finger Switch

Magnetic Finger Switch consists of a sleeve, which contains the magnet, that fits over a finger and a small external switch unit. A small movement (0.38”) of the finger toward the switch unit activates the switch.

Membrane Plate Switch

The Membrane Plate Switch, a thin membrane switch operated by 2.0 ounces of force, comes with a five foot cable and a mini-phone plug connector.

Mercury Tilt Switch

Mercury Tilt switch is activated by a change in position. This switch comes with a band for attaching to the wrist, arm, leg, etc.

Mini Cup Switch

This is the smallest single switch produced by TASH, Inc. It has a diameter of 1” and a height of 5/16”. As with the larger Cup Switch, it is a Cap switch in a plastic base which provides a surface for easy mounting on table, pillow or wheelchair bracket. The switch is operated by pressing the top surface. The activation pressure needed is 120 g.

Mini Joystick with Pneumatic Switch

This joystick is a four position short stroke (0.5”) ungated joystick with a flexible rubber shaft. The fifth switch is activated by puffing through the shaft. Activation pressure is 120g.

Mini Rocking Lever Switch (MRL-2)

Mini Rocking Lever Switch is a small dual switch operated by pressing the plate on top. Pressing one side activates one switch; pressing the other side activates the other. Hook-and-loop type material for mounting comes on the bottom. The activation pressure is 2.5 ounces.

Mounting Switch

The Mounting Switch is a versatile switch that may be mounted in a variety of locations at head level. An audible click is emitted by the Mounting Switch when the switch is closed.

Multiport

Multiport is a game peripheral port adapter that allows the user to select between two different game control devices with a single switch. Multiport eliminates the need to unplug either of the two game controls.

Neurolink

Neurolink is an input/output access system for severely mobility-handicapped persons that translates low neurological signals into a form the computer can interpret. The only requirement is that the user have voluntary control of some neuromuscular system, however small. Neurolink for the IBM PC concists of a three-electrode EMG, an infra-red transmitter and receiver connecting to a card. Neurolink simulates keyboard entry by inputting characters from a scanning array on the monitor. A Morse code program also provides inputting.

P-Switch

The P-Switch is a sensitive electronic switch that is activated by any muscle movement. When any surface in contact with the switch moves (e.g., the forehead when the brow is wrinkles), the wafer sends a signal to the switch unit. Sensitivity of the P-Switch can be adjusted. Light and optional audible tone indicate when the switch is activated.

Paddle Panel

The Paddle Panel is a replacement for handheld gamepaddle devices designed to allow better control as well as bilateral manipulation activites. Paddle Panel has two buttons and two knob controls and plugs directly into the game I O port on the back of the computer.

PC-Pedal

PC-Pedal is a single foot-pedal switch that acts as any of several keys to permit one-hand computing. Two versions are available: Standard controls the SHIFT, ALT, CONTROL keys; Enhanced control any key. The Standard version redefines the space bar as a backspace-delete key so the user does not need to move from home position to perform this function. To choose which key the pedal emulates, the user presses the pedal with the desired special key. When the pedal is subsequently pressed, it acts as the defined key until redefined. Any simple switch may be substituted for the pedal. All setup software is included; PC-Pedal plugs into the standard parallel port; a printer may be plugged into the PC-Pedal plug without interfering.

Penta Switch

Penta Switch is a set of five small button switches fitted in a disk-shaped housing. The activation pressure is 120 g.

Photo Cell Switch

Photo Cell Switch is a switch operated by interrupting a light beam. Any body part that can interrupt the beam can activate the switch.

Picture Switch Kit

Allows up to eight switches to be connected to the computer for direct selection input. Includes multi-switch interface box and four picture switches measuring 2-1/2” x 4”. AID+ ME is recommended.

Pillow Switch

Pillow Switch is a single switch operated by pressing the top foam surface. A pin and a velcro strip are attached to the switch for fastening to a pillow or to clothing; activation pressure is 180 g.

Pinch Switch

This switch is a small, thin, vinyl-covered switch. When the user pinches lightly on the unit, the switch is activated.

Plate Switch

Plate Switch is a very thin single membrane switch. A colored circle on the surface marks the pressure sensitive area. Available in red, green, yellow, blue and orange. Activation pressure is 50 g.

Plate Switch

This single switch is activated by pressing on the plate on top. An audible click accompanies activation.

Plate Switch

This Plate Switch is activated by 3 ounces of pressure and offers a click as audible feedback.

Plate Switches

This switch is activatede by pressing the plate on top. Suction cup feet are provided for stability. A Musical Plate Switch (with a built-in-music box), a Lighted Plate Switch, a Plate Switch on Stand (gooseneck with stand for stability), a Mirror Plate Switch and a Vibrating Plate Switch (which vibrates when activated) are also available.

Platform Switch

Platform Switch is a single switch consisting of a square platform with a large button in the center. Pressure on the button activates the switch. Activation pressure needed is 100g.

Pneumatic Switch

The Pneumatic Switch is a single switch controlled by sipping or puffing. Any small change in air pressure (caused by pursing the lips, moving the tongue, etc.) causes the switch to be activated. Attaching two switches “piggy back” allows the user to operate two switches with a single mouth tube. Activation pressure requires is 0.02psi. A dual pneumatic switch (where each of the two actions activates two separate switches) is also available.

Pneumatic Switch

Pneumatic Switch is a dual switch activated by sipping or puffing. A tube (mounted for convenient access) has a mouthpiece attached. The user sips or puffs on the mouthpiece, and the change in air pressure is transferred along the tube to a switching unit. This unit activates one switch for sipping, one for puffing. It comes with gooseneck and one table clamp.

Pneumatic Switch

Pneumatic Switch is a dual switch operated by breathing through a tube. Sipping activates one switch; puffing activates the other. Pneumatic Switch has an internal saliva trap which can be cleaned.

PRC Joystick (JS-4)

The PRC joystick is activated by pushing the handle in any of four directions. Each direction activates one of four switches. When used to control a scanning device, pushing diagonally may allow for diagonal scanning.

Pressure Switch

Pressure Switch is designed to be worn on the upper arm, lower arm, knee, etc. on a 12-inch velcro strap. Pressure activates the switch.

Puff Switch

Puff Switch is a switch activated by puffing into a mouthpiece attached to a tube. The switch comes with a 20” gooseneck and extra removeable mouthpieces. AID+ ME is recommended as the interface.

Puff-Sip

The Puff-Sip Dual Switch is a pneumatic dual switch activated by blowing and sucking on the mouthpiece. Mounted on a gooseneck stand which is internally reinforced and longer than most, it has replaceable mouthpiece. It requires little or no movement and offers an easy and unobstrusive way to operate two switches.

Pushbutton Switch

Pushbutton Switch is a single snap-action switch. To activate the switch, the user presses a round button located in a 1.25” diameter recess. This switch requires an activation pressure of 2 ounces.

Regenesis Breath Switch

A lightweight, electronic dual input switch to access a computer through the game port or serial port. This is a sensitive switch not affected by saliva, for use by persons with little head movement and good lip closure and by those dependent on a ventilator. The sensitivity is fully adjustible.

Rocker Switch

This dual switch is activated by pressing down on either end of the plate on top. Pressing one end activates one switch; pressing on the other end activates the other.

Rocker Switch

The Rocker Switch is a dual switch operated by pressing either side of the switch. It may be used to control a device requiring two switches for operation or to control two devices requiring a single switch. Activation pressure is 130 g.

Rocking Plate Switch

Rocking Plate Switch is a dual switch activated by pressing on either end of a long plate. Pressing one end activates one switch; pressing the other end activates the second. Suction cups are provided for stability.

Round Pad Switch

Round Pad Switch is a disk-shaped single switch activated by pressure on the top surface. The activation pressure is 180 g.

Sensor Switch

This switch is activated by small muscle movement. It has the capability of being a single or dual switch with separate controls for each. The switch may be positioned on the forehead or other parts of the body, work surface or headrest.

Single Push Panel

Single Push Panel is a plexiglass panel mounted on a wooden base. Switch is activated by pushing the panel. Activation pressure is 6 oz.

Single Rocking Lever Switch

The Single Rocking Lever Switch is a single switch activated by depressing the plate on top. The switch housing is made of plastic and has rubber feet on the bottom with a threaded hole for mounting. It comes in two models: low and medium force.

Sip & Puff Switch

This single switch is activated by sipping or puffing into a tube which is attached to a housing where the actual switch is located.

Soft Switch

Soft Switch is a single switch with a soft surface; it comes in a velvet bag that can be removed and washed. Activation pressure is 800 g.

Sponge Nurse Call Switch

The Sponge Nurse Call Switch is a cloth covered single switch. Any slight movement will activate the switch. An eight foot cord is provided with a phone jack plug; a miniature jack plug is also available.

Square Pad Switch

Square Pad Switch is a large single switch operated by pressing the top surface. A large target is designed to compensate for the user’s lack of controlled movement. Activation pressure needed is 600 g.

String Switch

The String Switch, an easily activated switch for users with limited active movement, requires less thatn 1/2 ounce of tension. The string is wrapped around a user’s hand or other body part.

Switch Assessment Kit

Multiple versions are available including Ability Switch Tester, Deluxe Assessment Kit and Switch Assessment Kit. These items may help in the selection of appropriate switches to suit the user’s needs and facilitates the selection of appropriate mounting arrangements.

Switch Latch Interface

The interface allows any momentary switch to operate in a latching mode - similar to the normal controls used to operate home appliances, allowing the user to turn on a device (i.e., a personal computer) with one touch of the hand.

T-TAM Keyboard and Mouse Emulator

T-TAM (Trace Transparent Access Module) is a box connecting communication or access aids to the computer. T-TAM translates signals generated from the access aid into standard keyboard or mouse signals and passes them to the computer. This feature is called “SerialKey” and allows a user to access all the same software available to the computer-using public. It included enhancement features: StrickeyKeys, RepeatKeys, SlowKeys, MouseKeys and ToggleKeys.

Thumb Switch

Thumb Switch is a conical housing with a button switch located at one end. The switch is held in the palm of the hand, and the button is pressed with the thumb. The switch is styled as a traditional nursing call alarm switch. Activation pressure is 20 ounces.

Tilt Switch

Tilt Switch is a small unit containing a single mercury switch. When the unit is tilted, the switch is activated. The unit is mounted on a band which can be strapped to the desired part of the body.

Tilt Switch

Tilt Switch is a unit containing a mercury-filled level and a switch. When the level indicates that the unit is tilted, the switch is activated.

Tip Switch

The Tip Switch is a mercury switch with smooth surface to allow easy mounting and positioning. The switch is operated by tipping it down 5 degrees from its horizontal position.

Tongue Switch (TS-2)

Tongue Switch is a dual switch activated by pushing up or down on a short lever. The switch has a threaded hole for mounting, for easier access by the body part used to activate it.

Touch Sensitive Joystick Control

Touch Sensitive Joystick Control is a single, omni directional touch-sensitive switch that can be triggered by any movement which moves the control away from the neutral position. Activation pressure for this joystick is between 1 and 2 ounces.

Touch Switch

Touch Switch is a single switch activated by very light pressure on a plastic plate. The activation pressure is 3 ounces.

Tread Switch

Tread Switch is a single switch operated by depressing a treadle type lever. An audible click accompanies activation. The lever and the bottom of the switch are foam rubber coated. A tapped mounting hole is provided on the bottom of the switch. Activation pressure is 5 ounces.

Treadle Switch

Treadle Switch is a single switch operated by pressing the hinged top surface. This switch allows the user to rest the body part used for activation on the switch’s surface between activations. The activation pressure is 700 g.

Twinkle

Twinkle is an eye switch device which can detect eye movement in two directions and generate one or two switch closures as output. These can be fed to a PC to interpret the switch closures as keystrokes (WORDS+ produces the software). The switch dedtects movement of a charge across a portion of the eyeball. Software allows use of Twinkle as communication aid and keyboard emulator.

Vertical Plate Switch

Vertical Plate Switch is a switch activated by pressing a circular button mounted on a right-angle bracket to allow it to be activated from the side. The bracket can be attached to a horizontal surface with provided suction cups, screws or double-sided tape. It can be mounted at a 41 degree angle.

Voice Activated Switch

Voice Activated Switch is a switch unit with a self-contained microphone. When the microphone detects a sound (such as speech), the switch is activated.

Wobble Switch

This switch is activated by any flexion of the spring lever. The lever comes mounted on a gooseneck and stand.

Wobble Switch

This switch has a protruding flexible lever; bending the lever activates the switch. The switch placement is flexible, allowing it to be placed directly on the monitor for activation.

Wobble Switch

This switch is activated by pushing against a lever. The lever has a spring built in and can be pushed in any direction for activation. The Wobble Switch comes with a threaded hole for mounting.

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