The magnetic door and window sensor activates when separated. It transmits a signal to the receiver and alerts you with every time the door or window is opened. The receiver for your wireless door chime plugs into any standard outlet. Plug it in and pair your devices.
(the other can be installed in the Internet bar computer case, prevent theft of computer hardware). Windows open (that is too big to alarm with a separate small .
Fosmon WaveLink 51007HOM Wireless Door Open Chime (Operating Range. GREENCYCLE Home Security Wireless Door Window Open Chime (Operating .
wireless+door+chime.. window; Staples Business AdvantageOpens a new window; Staples IndustrialOpens a new window. .. HoneywellÂ® TableTop P2-