1. Sticky and ready-to-use sticky installation: it can be flexibly placed on doors, windows, drawers, etc., without destroying the home structure and appearance 2. Real-time monitoring of the opening/closing of doors and windows: After installing the sensors, you can remotely know their opening and closing status through the mobile APP 3. Mobile phone message push: When the status of the door and window changes, the mobile APP can receive the message push in real time, and calmly deal with abnormal situations 4. Linkage smart scene: When there is , strangers break in, gas leaks, water pipe rupture and other safety hazards. When and windows are closed, the home warning smart scene will automatically open, comprehensively detect abnormal movements in the home, and protect the safety of family members and property Working voltage:3 (V) Alarm current:15 (mA) Static current:10 () Working temperature:-10C-+50C (C) Scope of application:homes, shops, office buildings, warehouses Type:Other Alarm Detectors Model:-DY-MC500A Installation :SMT Launching distance:100 (meter) Action distance:150 (mm) Communication :wireless Weight:40 (g) Order number:-DY-MC500A Colour:White Material:plastic Size:70x24x16mm Package Contents: 1 pair * sensors 1 * English manual 1 * Installation accessories Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.