Discover the innovative HoneyBeeswitch by Adaptivation. This is aneasy-to-useoption for those who usea switch to access their assistive technology device. Simply place a hand, head or other body part over the sensor windowto activate the HoneyBee switch. Asoundwill alert youwhen it’s ready to use. Includes a removable protective silicone cover and a battery. Dimensions (including cover) are 3" x 1.5" x 0.5" (8 cm x 4 cm x 1.5 cm). Compatible with a selection of Tobii Dynavox devices (device sold separately).