Feature:1. INTRUSION ALARM: When an intruder comes into contact with the beam, the infrared detector will be triggered, safe and reliable.2. INTELLIGENT DETECTION: Our infrared sensor can intelligently recognize small animals and allow them to pass without alarm.3. MULTI FEATURES: This infrared detector has functions such as tamper resistance, cutting resistance, and infrared interference prevention.4. RELIABLE MATERIAL: Made from ABS material, this infrared sensor has high density, high temperature resistance, strong anti UV, ensuring service life.5. WIDE USAGE: This infrared detector alarm is suitable for villas, factories, residential areas, and schools to prevent strangers from invading.Specification:Item Type: Infrared Beam SensorMaterial: ABS, PCVoltage: AC12-18V DC12-24VDetection Speed: 50-700msAlignment Angle (Horizontal): 180 (90).Package List:1 x Transmitter1 x Receiver2 x Installation Accessories4 x Screw4 x Rubber Ring1 x Instructions