photocell infrared sensor features: 1.Small size design, easy installation. 2.universal photocell infrared sensor for automatic door opener, windows curtains secutiry 3.IP55, can be installed outside. 4.an-glare, can work under temperature -10â?? to +70â?? 5.Safe, beautiful, economic, comfortable. Specifications: Infrared Frequancy : 1.92khz Power supply : 12 to 24 VDC /AC Wave length :940nm Input : r*15ma - t*30ma operating temperature : --10 degrees to 70 degrees Relay output : 1 a max *36 v Range : range can be reduced to 30% in bad weather conditions : for rain ,dust ,etc output: NO/NC optional by jumper