These wireless door/window contact sensors are used to alert you when a door or window is opened.

The two magnetic contacts are attached, so they are in-line with each other, to the frame and to the window or door. When the two contacts separate the wireless transmitter will alert your 6-Channel Premium Wireless Doorbell receiver.

The wireless door/window contact sensors work with the 6-Channel Premium Wireless Doorbell. Up to six sets can be added to your configuration.

Please Note: This product is shipped in blister packaging. Special return conditons apply.