Wireless doors and windows, magnetic sensor detectors.The wireless door magnetic detector detects whether doors, windows, and windows have been illegally opened, mainly paired with the "alarm host", when the host is out of defense, when the door or window has been illegally openedWireless door magnetic detector sends an alarm signal toThe alarm host sends an alarm, and the wireless door magnetic detector transmits wireless signals between the host and the host in an open area for 120-150 meters. With door and window sensors, you don't have to worry about your baby going out without notice, you can easily know when your elderly parents left or arrived home, and even stay alert when someone enters your store, office, and company front desk. Sensors keep you safe and informedProvide 24-hour monitoring.Even if you are far away from your home, garage, car, shed, garden, etc., it gives you a full sense of security.No need for complex installation tools.Sensors can be installed using double-sided tape or screws (included) in just a few steps. Specifications: Current: 5uA Protocol: IEEE 802.11b/g/n Operating temperature: -10 40 (14 F104 F) Operating humidity: 20% 85% Storage temperature: -10 60 (14 F 140 F) Storage humidity: 0% 90% Standby time 6-12 months Wireless type: 2.4GHz Size: Body: 7cm X 3.8cm X 1.5cm Small body: 5cm X 1.5cm X 1.5cm. Your order will be shipped due to continuous delays in global postal delivery. Please allow at least 14 working days for necessary delivery.