Feature: 1. Wireless sensing switch, multiple sensors can control the same receiver, or one sensor can control multiple receivers. 2. The detection time delay between motion sensor alarms can be configured from 15 seconds to 30 seconds. 3. Infrared human body sensor, very suitable for front doors, window frames, driveways, walking paths, etc. 4. Easy to use, no wiring, just place the sensor at the entrance of the driveway and the receiver at home. 5. When 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. Specification: Condition: 100% Brand New Item Type: Wireless Sensor Detector Material: Plastic Weight: Approx. 187g / 6.6oz Induction Transmitter Product Size: Approx. 12x6.5x4cm / 4.7x2.6x1.6in Receive Controller Product Size: Approx. 6.8x3x6cm / 2.7x1.2x2.4in Sensor Battery Model: 4 x AAA Battery (Battery Not Included) Universal Voltage: DC12-72V Sensing Distance: The longest distance is 10 m / 32.8ft Sensing Angle: 120 Degrees Allowable Distance Between Sensor and Receiver: More than 100m / 328.1ft in an open area, through the wall. Package List: 1 x Motion Sensor (Battery Not Included)1 x Receiver2 x Plastic Accessory Note: 1. Please allow 0‑1 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.