- Lightweight, compact, grey "credit card" format.
- Dimensions: 3.3" L x 2.1" W x 0.3" H. Weight: 1.0 oz (with batteries).
- Durable, rugged case ensures maximum longevity under extreme conditions.
- Will not interfere with other technologies.
- Participants receive answer confirmation on their Response Card through two-way communication.
- Successful transmissions are acknowledged on the participant's keypad via a three second long visual green light signal.







