Bellman Visit Telephone/Multi-Purpose Transmitter BE1123
The Telephone transmitter helps you to notice telephone calls.
The installation is really simple - Just plug the Telephone transmitter into the telephone socket by using the enclosed intermediate adapter.
When activated by an incoming telephone call, the Telephone Transmitter sends a radio signal to the receiver(s) for clear alerting.
Bonus: When disconnecting the telephone cord, the Telephone transmitter can be used together with other triggering devices like Door entering contact mats, external relays/push-buttons or magnetic contacts for supervising the person entrance and the opening of doors or windows and more.