Item Type: Infrared Beam Sensor Material: ABS Color: Black Technology: Infrared Receiving Range: ≤15m / 49ft Infrared Frequency: 1.92KHz Working Voltage: 12-24V DC/AC Application System: Vehicle Guardrail System, Sidewalk Gate System, Factory Warehouse, Hotel Villa, Family Door And Window, etc. Outdoor Waterproof Design: Single beam infrared beam alarm with waterproof cover, fully sealed structure for protection against water, fog, dust, and insects, enabling reliable operation in harsh environments. Unique Design: IR beam sensor features a high-power transmitter, 90% sensitivity margin, high-power infrared transmitter and receiver pair, low-power consumption circuit, and circuit protection design. Offers high resistance to RFI and EMI with a built-in digital filter circuit. Strong Anti-Interference: Single infrared beam sensor uses a hemispherical optical lens to focus the beam precisely without scattering. Equipped with an automatic strong light adjustment system to effectively reduce interference from bright light and vehicle headlights. Wide Use: Active infrared detector suitable for security applications in small supermarkets, convenience stores, entry and exit points, window protection, schools, office buildings, dormitories, residential gardens, and similar environments. Installation: Recommended installation height is over 20cm, with a minimum distance of 1m between units. The infrared protection device should be vertically mounted and aligned in the same horizontal plane. Install the receiver first, then align the transmitter (the receiver's OFF light will turn off when properly aligned), secure the units, connect the wiring, and complete the installation. Package Includes: 1 x Infrared Transmitter 1 x Infrared Receiver 4 x Short Screw 6 x Long Screw 6 x Screw Sleeve 1 x Manual