POWERLINE CONTROL SYSTEM P5-DBM Door Bell Module,2 Channels. Detects Current Input - POWERLINE CONTROL SYSTEM P5-DBM

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.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