RETRO DBB Doorbell Adapter
RETRO-DBB Doorbell Adapter for 2 Wire Doorbell
- This adapter allows you to connect to our front door station if you only have 2 wires. However 3 Wires are required for the RETRO System to speak through the front door station. Without the 3rd wire you can only send a signal to the Master chime or a separate doorbell to “ring only”.