Smart Open/Closed sensor

The Smart door sensor can easily check door open or closed status on APP. It will send an alert when door knocking or in low power. It can be put on the door, window, safe, drawers and child-proofing forbidden zone etc.

Specs:

* Processor: ZigBee MCU
* ZigBee wireless standard: IEEE802.15.4
* Power Supply: DC3V            Battery: 1xCR2450
* Alarm alert: trigger an alert when door knocking or open or closed
* Low power alert: remind users to change batteries when in low power