TRANSPONDERS AVI-1 The Model AVI- Receiver identifies vehicles with a unique coded transmitter (Model AVI-X Transponder) and provides an opening signal for vehicle identification and/or control purposes. Because the transmitter is mounted to the underside of the vehicle, the code is tied to the vehicle, eliminating lost, stolen, or forgotten hand held devices or codes. The transmitter must pass directly over the AVI receiver loop coil (within 3 feet) that is installed in the road surface, requiring the vehicle to be in an exact area to activate the gate controller. Because the loop coil is installed in the pavement, it is not exposed to the elements or vulnerable to vandalism. Size: 1.60 in (4.06 cm) wide x 2.90 in (7.37 cm) high x3.50 in (8.89 cm) deep excluding connector. Power: 89 to 135 VAC, 50/60 HZ, 6 Watts max. Enlcosure: The enclosure is aluminum with a durable polyester coating. Printed circuit boards are made with 0.062- in FR4 material with 2oz copper on each side and plated- through holes. CUTSHEET   EXPLODED VIEW   INSTALLATION   WARRANTY Available Accessories: Alarms, UPS battery back-up, Red/Green traffic lights, Heaters.