Item Type: Infrared Beam Sensor Material: Plastic Size: Approx. 96 x 43 x 22mm/3.7 x 1.7 x 0.9in Transmitter: Input Voltage: 12-24V AC/DC, Working Current: 20mA Receiver: Input Voltage: 12-24V AC/DC, Working Current: 32mA Package List 1 x Transmitter 1 x Receiver 2 x Double Faced Adhesive Tape 6 x Screw 4 x Expansion Screw 1 x English Instruction 1High Efficiency: The infrared beam sensor uses single beam infrared sensor technology to ensure highly accurate detection and tracking capabilities, providing excellent security protection. 2Enhanced Security: The door infrared beam sensor has reliable infrared detection and response speed, effective identification of intrusion behavior, improving the protection level of the security system. 3Multiple Purpose: The infrared gate sensor is suitable for home and business places, such as doors and windows, entrances, garages, warehouses, etc., to provide you with a comprehensive security solution. 4Durable Material: Door window infrared beam sensor is made of premium material, durable and reliable, high strength and wear resistant, having a long service time. 5Easy to Install: IR gate opener sensor has a simple installation, convenient and time saving, don't need too much tools or complicated steps.