🍂【DETECTOR RANGE】— The farthest distance of infrared sensor is about 5 meters, allowing you to warn in advance and extra warning before the guest (or intruder) arrives, and can let you know the intruder or visitor anywhere in the house in time. 🍂【HIGH SENSITIVITY】— The infrared sensor has high sensitivity, no false alarms, and anti-interference. Unaffected by light, it can be sensed day and night. Effective real-time monitoring of human movement within the monitoring range. 🍂【WIDELY APPLICABLE】— This Welcome Doorbell can be installed in door entrances, home mailboxes, driveways, galleries, gates, sidewalks, apartments, offices, hotels, shops and many other indoor places. 🍂【INSTALLATION NOTE】— The receiver does not need wiring, installation is not troublesome, and the detector is wall-mounted. Do not place the detector in an area where wind will move it. Also try to keep the detector on a clear path to the receiver so that you can get the best performance. 🍂【SATISFACTION GUARANTEE】— If you have any questions, please contact us and we will serve you wholeheartedly. Our mission is to provide customers with high-quality products, to provide customers with satisfactory products and a comfortable buying experience., Weight: 0.2425084882 Pounds, Manufacturer: Wytino