Feature:1. APPLICABLE SCENES: Universal digital frequency infrared fence detector, suitable for indoor and outdoor use, used for window, balcony, garage, villa, school, supermarket, office building, etc.2. STABLE TO OPERATE: The light grating detector adopts excellent main chip and sensor, with a wide working voltage of 833VDC, ensuring stable operating.3. MULTIPLE FUNCTIONS: Adopting digital frequency modulation demodulation technology, infrared transmission digital signal, automatic focusing circuit, acousto optic calibration and catch.4. WORKING PRINCIPLE: After installation, when someone or other intruder comes into contact with 2 or more adjacent beams, the alarm output triggers the infrared barrier detector.5. INTRUSION ALARM: Smart detection technology can identify animal passing through without alarm, with tamper proof, thread cutting proof, and infrared interference prevention.Specification:Item Type: Infrared Fence AlarmMaterial: PC, Aluminum AlloyWorking Voltage: 8-33VDCInfrared Beam: 4Working Current: Transmitter I 35mA, Receiver I 45mAResponse Speed: 80msResponse Time: 1.5sFeature: 4 Channel PWMAlarm Output: NC NO Relay OutputAlarm Method: Wired or WirelessOptical Axes Adjustment: Horizontal 180Auxiliary Function: Power indicator light, alarm indicator light, RT thermal indicator light, buzzer.Package List:1 x Transmitter1 x Receiver1 x User Manual4 x Long Screws4 x Expansion Tubes4 x Short Screws