1Wireless sensing switch, multiple sensors can control the same receiver, or one sensor can control multiple receivers. 2The detection time delay between motion sensor alarms can be configured from 15 seconds to 30 seconds. 3Infrared human body sensor, very suitable for front doors, window frames, driveways, walking paths, etc. 4Easy to use, no wiring, just place the sensor at the entrance of the driveway and the receiver at home. 5When person enters sensing range, the sensor immediately sends a signal to receiver, after receiver is powered on, it will count down and power off according to set time. Condition: 100% Brand NewItem Type: Wireless Sensor DetectorMaterial: PlasticWeight: Approx. 187g / 6.6ozInduction Transmitter Product Size: Approx. 12x6.5x4cm / 4.7x2.6x1.6inReceive Controller Product Size: Approx. 6.8x3x6cm / 2.7x1.2x2.4inSensor Battery Model: 4 x AAA Battery (Battery Not Included)Universal Voltage: DC12-72VSensing Distance: The longest distance is 10 m / 32.8ftSensing Angle: 120 DegreesAllowable Distance Between Sensor and Receiver: More than 100m / 328.1ft in an open area, through the wall 1 x Motion Sensor (Battery Not Included)1 x Receiver2 x Plastic Accessory 1. Please allow 0& 8209;1 inch error due to manual measurement. Thanks for your understanding.2. 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.