The sensor is paired with App via Bluetooth and is controlled on App via WiFi.
There is a reminder on App about the low battery, and 3-month history records are automatically saved.
With Simple peel and stick installation, it is easy to fit in door frames and window sills.
Batteries are not included in the package.
Working Voltage: DC3V (2 x 1.5V battery)
Quiescent current: ? 40 ?A
Wi-Fi: IEEE 802.11 b 2.4GHZ
Material: PC V0
Emission current: Operating systems: (Android 4.1 & iOS 9.0) or higher
Installation gap: Working temperature: -10°C-40°C