Overview:
This is a door and window . The door alarms can work with system. The door detects the opening status and immediately sends notification message to the APP. 

Features:
*With low remind function 
*Low-consumption chip design, which can make it work long .
*High Sensitivity. design, tiny and . Easily install with stickers.
*Simply attach piece to your door or window, and attach the other piece to the door or window frame.
* intrusion warning for homes, apartments, homes, dorms, offices, hotel rooms, garages, etc.

Specifications:
: LR44*3
Voltage: 4.5V
Current: 60mA
: 120dB
Action distance: ≥15mm
distance: ≥150m (open area)
Quiescent current: ≤5μA
Emission current: ≤10mA
: 12-18 months
Operating environment: -10℃-50℃ (14℉-122℉)

Package Information:
Package Size: Approx. 11.5*6.5*4.5*
Package Weight: Approx. 150g

Package  List:
4 * Door / Window
1 * English manual