Feature:1. APPLICABLE SCENARIO: Safety light curtain sensor is suitable for installing wall in villas, factories, residential areas, and schools to prevent strangers from invading.2. ABS, PC MATERIAL: Made of ABS, PC material, the light curtain sensor operates with high density, high temperature proof, strong toughness.3. WORKING PRINCIPLE: After installation, when someone or other intruder comes into contact with two or more adjacent beams, the alarm output triggering the infrared barrier detector.4. INTELLIGENT RECOGNITION: The alarm identify small animals passing through without alarm. This product also has intrusion alarm functions such as tamper proof, thread cutting proof, and infrared interference prevention.5. 50M MEASURE RANGE: This light grating sensor has a measure range 50m, check and fine the optimal installation location for better performance.Specification:Item Type: Safety Light Curtain SensorMaterial: ABS, PCWorking Voltage: AC12-18V, DC12-24VDetection Distance: Approx. 50m / 164ftDetection Speed: 50 to 700msAlignment Angle (Horizontal): 180 ( 90 )Protection Level: IP65.Package List:1 x Emitter 1 x Receiver 4 x Clamp 1 x Manual