YALIYA DC12V Infrared Photocell Beam Sensor Automatic Gate Door Garage Shutter Barrier Detector for Door Window Burglar Alarm System Sliding Gate Opener Accessory 24V 1 PairTransmitter and Receiver

Reliable to Use Features advanced security technology that ensures mul le protection ty Infrared Photocell beam will make the gate s or reverse automatically in case of obstruction happening to protect your ty and property Easy to Install Install each pair at the opposite positionsThen there is a infrared area between these two detector parts When someone passes the infrared region the detector will send alarm signal to the security alarm host which not included here Wide Application Works for all gate openers Can be widely used for access control system parking lot defence wall door and window balcony garage passage and other places Great to be installed for security system in school office building hosipital home yard etc Waterproof UV Proof Fullysealed waterproof and dustproof egg shaped cover sunlightfiltering case enables it to work in harsh environment Easy installation Stable Signal Transmission Highpower infrared transmitter receiver The transmitter creates a reliable and invisible infrared beam up to 65in 20m When interrupt the infrared beam the relay will output switch signal.