WATERPROOF: The IR alarm sensor features a waterproof design. It is waterproof, dustproof, and mite-proof, making it suitable for use in harsh environments. DURABLE: The product is fully sealed with a polymer coating, and its surface is treated with a beautiful, age-resistant paint. APPLICATIONS: Ideal for installing a security system in a school, office building, hospital, private courtyard, etc. Ideal for entry doors, window frames, driveways, paths, and anywhere in your home where you want to be alerted. EASY TO INSTALL: Small size for a less visible installation. Both practical and convenient, providing you with a beautiful view and a sense of security. SMART DESIGN: Equipped with a smart chip to automatically detect environmental changes, automatically adjust the radio transmission power according to environmental conditions, effectively extending the lifespan of the transmitter tube while reducing power consumption. Specification: Material: ABS Color: Black Alarm Output: NC and NO nominal contact AV/DC 30V, 0.5A Detection method: Covers light simultaneously Warning Distance: 100m / 328ft Light Source: Infrared digital pulse Induction rate: 50-700ms Horizontal adjustment axis: 180° ± 90° Vertical adjustment axis: ± 10° Input voltage: DC 12-24V, AC 11-18V Working current: 100mA Package list: 1 * transmitter 1 * receiver 3 * brackets 4 * screws Note: The actual color of the product may differ from the picture due to lighting. There may be a slight deviation in the product measurements.