Features: 1.Waterproof: Door infrared beam sensor, fully airtight with waterproof and dustproof egg shaped cover, allowing it to work in harsh environments, easy installation. 2.Universal: Infrared beam sensor for all door openers (as long as models with normally open or normally closed dry contact inputs are supported), also for controlling security alarm systems. 3.Intelligent: High power infrared gate sensor that creates a reliable and unseen infrared beam and a relay that outputs a switch signal when the infrared beam is interrupted. 4.Safe To Use: Infrared beam sensor ensures multiple protection and safety and will stop or automatically reverse the gate to guard public property such as poultry and homes. 5.Multiple Applications: Infrared beam sensor is suitable for electric chicken coop gates, automatic gates, etc, and can be installed in mini markets, window entrances, home yards, etc. Specification: Item Type: Infrared Beam Sensor Material: Plastic Use: Electric Chicken Coop Door, Automatic Door Infrared Sensor Range: 15m/49.2ft Infrared Frequency: 1.92KHz Wavelength: 940nm Working Temperature: -25-55 Use Voltage: 12-24V DC, AC PackageList: 2 xInfrared Beam Sensor 1 x Manual 2 x Coil 6 x Expansion Screw Tube 6 x Large Screws 4 x Small Screws