Hands-Free Door Chime or Window Alert with Magnetic Sensors, Activates When Door or Window is Opened…See more

"Keep an eye on your children's safety, it will remind you when children open the door/window and sneak around.

Shop Keeper Door Alarm - Know when a customer enters your door.

A pleasant tone chimes when the door is opened by a customer.

Operates as a door or window sensor.

Works using a reed switch and a magnet.

The reed switch attaches to your window/door frame, and the magnet attaches to the window/door itself.

When a window/door with an active sensor is opened, the magnet pulls away from the reed switch and the alert chime is triggered.

This wireless open sensor alarm system for home has a long operating range of up to 1000 ft and ensures that you will never miss a visitor no matter where you are in the house.

You can also easily add on 20+ more extra receivers, transmitter buttons, motion sensors and door sensors.

Custom build your own door alarms for home to fit your needs.

For homes, apartments, basements, warehouses, offices, garages, and more!"