$15.75
AVAILABILITY: In Stock
The Intrasonic RETRO-DBB door bell button circuit board allows a 2-wire door bell button to be connected to the RETRO intercom system. This board is installed behind the master unit. The 2-conductor wire from the door bell button in connected to the board. A 3-wire adapter cord connects the board to the door speaker connector on the master. This enables a standard door bell to ring a chime throughout the intercom system.