OPTEX infrared external motion detector, curtain type, 12m left and 12m right. New Design, easy installation, reliable operation. It has 2 beams per side and both must detect motion to activate the output. 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. Speed no. moving target: 0.3 to 2.0m/sec. It has a Back Tamper. Operating voltage 9.5 to 18V DC. 31mA consumption, 2 NO/NC outputs, LED alarm indication. IP55, -30 +60C.