Features 1、For Higher Safety: When someone or other intruder comes into contact with two or more beams, the alarm output will turn on the infrared barrier detector. 2、Has Good Accuracy: Intelligent detection technology can identify small animals passing without alarm. It also has intrusion alarm functions such as anti tampering, anti thread cutting, and anti infrared interference. 3、Wide Application: Widely used in window, balconies, garages, villas, schools, supermarkets, office buildings, etc., largely improving the overall safety. 4、Dependable Work: This product adopts digital frequency modulation demodulation and utilizes infrared to transmit digital signals. Equipped with automatic focusing circuit design, acousto optic calibration and catch. 5、Easy to Install: Comes with a light weight and a compact size as well, the safety light curtain with sturdy base is very convenient to install. Specification Item Type: Safety Light Curtain Material: PC, Aluminum Alloy Working Voltage: 8-33V DC Infrared Beam: 2pcs Working Current: Transmitter Current I: ≤ 35mA. Receiver Current I: ≤ 45mA. Response Speed: ≤ 80ms Response Time: ≥ 1.5s Alarm Output: NC or NO Relay Output Alarm Method: Wired or wireless. Wireless optional, 433MHz. Optical Axes Adjustment: Horizontal 180 °. Auxiliary Functions: Power indicator light, alarm indicator light, RT thermal indicator light, buzzer. Package List 1 x Transmitter 1 x Receiver 1 x User Manual 4 x Long Screw 4 x Wall Plug 4 x Short Screw