1-4Pack TUYA Smart Life WiFi Door & Window Sensor Detector Office Home Security

WiFi:802.11 b/g/n. Permanent magnet: 43 10 14mm. Alarm Current:≤130mA. 1 sensor,1 manual,1 sticky. Battery: DC 3V LR03（AAA battery，not included）. 【Detect door/window status 】When the door/window is opened or closed,the device triggered and push notification to the phone.

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