Features:

WiFi/ZigBee water leakage sensor is mainly used for water leak detection. When a water leak occurs, the device immediately sends an alert notification to your mobile phone, enabling full-process remote monitoring via the phone. It is widely applied in households, stores, industrial facilities, and community water management systems.
Adopts ultra-low power consumption program control technology and can report water leak status in real time.
It runs on 2 AAA batteries (not included). When the battery power is low, the APP will remind you to change batteries.
Can support both iOS and Android system.
Specifications:
Model: HBK-S03
Powered By: 2pcs AAA 1.5V batteries (not included)
WiFi Standard: 2.4G IEEE 802.11b/g/n
Alarm Output: WiFi-transmitted Alarm
Lower Power Undervoltage: ≤2.4V
Enclosure Material: ABS
Dimensions: 3-1/16"x1-1/4"x53/64" (77.7x31.7x21.2mm)