Features: 1Equipped with high power transmitter and receiver high sensitivity suitable for home use. 2With infrared sensor with high safety and high level of anti-radio frequency interference / electromagnetic interference capability. 3Adopting the sealing design of rainproof fogproof dustproof and insectproof the sensitivity of the detector will be automatically improved (AGC circuit). 4Adopts high-quality PC material and has the characteristics of corrosion resistance aging resistance and wear resistance. 5The beam blocking period is adjustable and has strong adaptability. When interrupted the relay outputs a voltage-free switching signal. Specification: Condition: 100% Brand NewItem Type: Single Infrared DetectorMaterial: PCTechnology: Active Infrared RadiationReception Range: 15m (Under a bad environment such as rain dust etc. the reception range may be reduced by 30%)Frequency: 1.92KHzInput Power: 12V-24V DC / ACWavelength: 940 mm / 37 inInput Current: Receive: 15mATransmit: 30mAOperating Environment: -20 - 70Maximum Load: 1A 36VWeight: Approx. 113g / 4ozProduct Size: Approx. 7.5x4.5x3.5cm / 3.0x1.8x1.4inInstallation: The optimal installation height should be greater than 20cm and the distance should not be less than 2m. When installing the infrared protection device should be placed vertically and on the same horizontal line. When installing you should install the receiving part first and then install the transmitting part (when they are in a straight line the OFF light in the receiver is off) and then fix it. Package List: 1 x Single Infrared Sensor Transmitter1 x Single Infrared Sensor Receiver6 x Installation Screws6 x Expansion Pipes4 x Sensor Screws2 x Rubber Bands1 x English Manual Note: 1.Due to the high transmit power of this product there may be no reaction when the transmitter and receiver are too close. Sensitivity can improve the sensitivity by removing the slave optical lens in transmitting and receiving.2.Please allow 0-1 inch error due to manual measurement. Thanks for your understanding.3.Monitors are not calibrated same item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard.