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Easy, cheap security for your home or apartment.
This is a digi-office wireless door/window alarm kit.
Comes with the magnetic sensor, the main alarm unit, and two remote controls.

When the magnet separates from the sensor, the alarm goes off at 110dB—loud enough to scare someone off or alert you.
![LZ] WSDCAM 4-in-1 Door Window Sensor Sound Security Alarm Door Open Closed Detectors 110db Magnetic Sensor Alarm Wireless Door Alarm I4817643409 LZ] WSDCAM 4-in-1 Door Window Sensor Sound Security Alarm Door Open Closed Detectors 110db Magnetic Sensor Alarm Wireless Door Alarm I4817643409](https://m.media-amazon.com/images/I/61QytsK+7xL._AC_.jpg)
Range is about 20 meters.
It's battery powered (batteries not included).

Simple to install, just stick or screw the pieces up.
The remotes let you arm and disarm.

White color, made of ABS plastic.

Response time is 200ms.

Great for renters who can't hardwire things.
Works indoors or outdoors if sheltered.
If you want a heads-up when a door opens, this does the job.
4 out of 5