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The DBM Doorbell Ring Interface Module is a small plug-in device designed to sense the current of a doorbell ring to trigger the transmission of digital commands onto the existing powerlines.
The DBM can be programmed to send any UPB link command to turn on or off (or blink) any light or group of lights upon the ringing of a doorbell. Great for the hearing impaired!
The DBM plugs into any standard receptacle. An easy-to-wire four terminal connector enables terminating two doorbell circuits from as far away as 1000 feet.