Call-Back Display Unit for the MF440 Digital Apartment Intercom System. Should you opt for a Call-Back option on your system, where tenants can call the guard-house, the system will require this Call-Display Unit so that the Guard can identify which unit is calling the guard-house.
- Size: 180mm x 140mm wide x 70mm high
- Mounting: Surface box
- Finish: Anodized Indoor Aluminium Box
- Power: 24vdc; 30ma (idle)