OPTEX infrared wireless outdoor motion detector, curtain type with antimasking, 12m left and 12m right. New Design, easy installation, reliable operation. It has 2 beams per side and both must detect motion for the output to activate. Adjustable coverage distance (2.5, 3.5, 6, 8.5, 12m), sensitivity and Alarm output can be independent per side. It is placed at a height of 0.8-1.2m. It has an automatic temperature control circuit. moving target: 0.3 to 2.0m/sec. It has a Back Tamper. Operating voltage 3 to 9V DC. 16mA@3vdc consumption (stand-by), 2 outputs NO/NC, LED alarm indication. IP55, -30 +60C.