Description : Automatic adjustment integrated strong light filtering system , prevents glare or car lighting Unique optical design : the optical glass , the light beam will penetrate the special anti - layer ( such as rain and snow ) and other capabilities ; High levels of resistance to RFI / EMI capacity ; Unique design of the digital filter circuit Automatically increases sensitivity to fog or bad weather ; Optional dual aspherical fresnel or secondary focus lens to achieve a large diameter light beam Automatic environment recognition circuit , avoid reflective interference in a modular way ; Horizontal / vertical optical angle easy to adjust , easy to calibrate 99 % photographic margin ; Built - in optical view ; Anti - circuit design ; Use of type C output device ; The adjustable beam interdiction cycle is more and adaptable Specification : Number of Beams : 2 beams Install Distance ( Max .) Outdoor : / Indoor : Dtection : 2 beams blocked simultaneous Optical Source : Infrared digital beam Relay Contact Output : NO . NC Response Speed : 50 ~ 700msec Contact Rating Output : AC / DC30V 0 . 5AMax Operation Temperature : - 25 C - 55 C Operation Humidity : 5 % - 95 % RH ( relative humidity ) Power Supply : DC 13 . 8 ~ 24V AC 11 ~ 18V P 15W Scope of Application : For school , office building , , home yard , etc . Package Includes : 1 Piece Active Infrared Detector ( transmitter and receiver ) 1 Piece User manual Note : Please allow slightly 0 - 1cm difference due to manual measurement . Colors can appear different depending on light and how the listing is viewed . Thanks for your understanding and attention . Wish you a pleasant shopping experience !