This is an infrared sensor kit, which is used to automate the gate opening and closing at any place. The sensor comes in two parts a transmitter and a receiver. The sensor works on the principle of infrared radiation that means if the infrared beam from the transmitter is broken then the receiver will activate the output. The Pair Of Infrared Detectors Can Reliably Generate Visible Infrared Rays Up To 20 Meters Long. The Barrier Detector Frequency Of The Single Beam Alarm Is 1.92 Khz, The Power Supply Is 12 V Dc And The Wavelength Is 940 Nm. IP55 Rain Cover (Fog), Dust (Worm) And Other Comprehensive Weather-related Sealed Structures, Infrared Detector Can Maintain Normal Operation In Harsh Environments. In Severe Weather (Fog, Rain, Dust, Etc.) The Range Of Infrared Detector Can Be Reduced To 30%. The Infrared Detector Is Suitable For Security Systems In Schools, Office Buildings, Hospitals, Parking Lots, Apartments And Other Places. The Barrier Detector Widely Used In Alarm Systems, Access Control Systems, Etc.