Fibre-Optic Eye-Blink Switch This switch works best when eye-blinking is the only movement the user is able to perform. The sensor is capable of discriminating between random eye-blinks and purposeful controlled eye-blinks. A head strap is included and the device can also be used with other body parts in fiber-optic mode. Sensing range of 1/4 in. Size of 3/4 L x 1/4 Diameter in. Includes the PCM2 power control module More information about the switches that we sell | 
