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Feature

Door and window alarm helps deter intruder/thieves effectively by 108dB loud alarm, also can be door open chime help notify you if children/pet or others are coming/ going
Magnetically triggered door alarm sensor suitable for Doors, Windows, Sliding Door/ Window, Freezers and Refrigerators
General Alarm, Constant Alarm, Time Delay(Closing-door Alert ), Doorbell 4 in 1 Multi-Function, you can set the appropriate mode according to your need
Easy to press off/on button to power off/on when you don't wanna to hear any sounds of this door alarm or when you need it
Simple peel and stick installation & Low consumption design, they can work for over 2 years

Description

Specifications:
-It need two AAA alkaline batteries ( not included )
-They can work for over 2 years with low-consumption design
-Not only an alarm, but also a doorbell
-When it need replace batteries, the LED light will flash once every second
-Package Size: 4.2*2.5*1.5inch
-Package Weight: 51g

Operation to work:
-After instaliing batteries, press any mode button once to power on and enter the corresponding mode.
-Press the off/disarm button for 2 seconds to power off.

Package:
-1* Alarm
-1* Magnet box
-1* User Manual