Connecting a doorbell.

Connect a standard push-button doorbell to screw terminals 3 & 10. The "chime" is audibly different (and non-adjustable) from the alarm-tones used for the exchange lines.

Ensure link J1 is bridged.

Power for a 12V doorbell light can be wired from screw terminals 3 (negative)& 10 (positive).

See our installation guide for further instructions.

Our training course notes also provide more information.