The Monolith C a/b door intercoms impress with their timeless design, high-quality workmanship, and reliability. They can be mounted on the surface or flush, with no screws visible on the front panel.

Not only is the design convincing, but the functionality is as well. Features such as the connection option for the existing doorbell, automatic day-night switching, and the immediate termination of the door call without a lingering tone when opening the door are just a few of the many functions available.

Main features:

• Connection to an analog extension
• Power supply for the intercom electronics via the telephone system
• Programming via telephone or with an optional USB cable
• 2 integrated potential-free relays for door opening or additional bell
• Code-based pickup possible, eliminating busy tones
• Volume of the microphone and speaker electronically adjustable.