Wireless infrared motion alert system for quick, reliable notice when someone approaches your property. Compact PIR transmitter and batterypowered receiver make installation simple and allow flexible placement without wiring. Expandable design supports multiple receivers and multiple sensors working together to cover larger areas. Key benefits Immediate notice: Infrared motion detection alerts you the moment someone enters the sensor zone, giving advanced notice before they reach your door. Easy installation: Compact, discreet sensor mounts on a garage, mailbox, fencepost, or wall and installs in minutes with included screws. No wiring required: Battery operation keeps the system portable and easy to reposition. Scalable coverage: Add more receivers or sensors to expand coverage across home, office, warehouse, store, or garage areas. Loud, clear chime: Receiver delivers an audible alert to make sure alerts are heard indoors. Specifications PIR sensing angle: 45 degrees PIR sensing distance: 10 ft to 23 ft Transmission range: approximately 328 ft / 100 m in open air Receiver power requirements: 3 AA batteries (batteries not included) PIR transmitter power requirements: 1 9V battery (battery not included) Chime volume: approximately 110 dB What is included 1 PIR transmitter sensor 1 receiver 1 instruction manual 1 pack of screws Practical use scenarios Mailbox or delivery alert: Mount the sensor on or near a mailbox or gate to receive an audible chime when a delivery person arrives. Garage or driveway monitoring: Place the sensor to monitor driveway access and receive notice inside the house or garage when someone approaches. Retail or workshop entry alert: Use a sensor at the entrance to a small store, workshop, or warehouse to know when customers or visitors enter. Additional notes Multiple receivers can pair with multiple sensors to create a customized alert network across different locations. Batteries are required but not included; select fresh AA and 9V batteries for reliable operation. Ideal for locations where a wireless, noninvasive alert is needed without running power or data cables.