The TD-20U is the battery-powered sensor transmitter for the RCTD-20U (Wireless 2000). The detection pattern is selectable, allowing for a 17 foot fan pattern or 50 foot beam pattern, and sends a signal back to the RC-20U chime box when compromised. The device is powered by a standard 9V battery (not included), and up to nine TD-20U's can be added to one RC-20U receiver.
Operates on a 9V lithium or alkaline battery
Choose 50ft. Long Range or 17ft. Fan (Wide) detection pattern
Weather proof housing (IP54 rating) for both indoor and outdoor use
Uses passive infrared to detect motion and send RF signals to receivers
2000ft. transmission range (line of sight)