Active Photoelectric Single infrared Beam Sensor Barrier Detector Alarm System Features: This is upgrade version of single beam sensor with latest LED light and more smt components compare with the old 3 lights handmade model,it's more stable and reliable. When interrupt the infrared,the relay will output switch signal,it can work for parking barrier,walking gate,vehicle gate as body induction. It also can work as window,door and passageway anti-burglar detection. 1. It can work in distance between 2meter to 15meters,when use in short distance,because the infrared is too strong to break,then you should remove the lens cover can work properly. 2. when interrupt,the relay output switch signal without voltage. 3. It has N/O and N/C switch. 4. It can work with access control system,parking barrier and alarm system etc. 5. It works with 12V power supply. Specification: 1. Single Beam Infrared Sensor with latest LED indicator light. 2. Anti-glare up to 50,000 for LUX,to avoid the impact of for glare or car lights 3. Sealed design to anti-rain (fog),dust (worms) and other integrated weather,the detector sensitivity will increase automatically(AGC circuit) 4. With high levels of anti-RFI / EMI capability 5. High-power transmitter,sensitivity surplus degree up to 90% 6. High-power infrared receiver tube,low-power process technology 7. Adjustable of beam interdiction period,to make it more flexible and adaptable 8. Professional anti-jamming optical housing Package Including: 2 x Beam Sensors