Smart Water Leakage -to avoid flood in house
It can detect rain & water leakage, and send alert message by App.
It built-in photoresistance, could recognize light brightness.
Lithium-ion battery-powered and micro USB charging.

Specs: 
* Processor: ZigBee MCU
* ZigBee wireless standard: IEEE802.15.4
* Power Supply: Built-in Lithium-ion battery cell 3.7V/Support micro USB
* User could receive alarm message by App