The white KB-3MRD Master Monitor from Aiphone allows you to connect up to 3 video door stations and 4 additional sub monitors. The unit features a TFT color monitor, a handset for private communication, a door-release button, call-in LEDs, tilt control, and All Call, door chime volume control, & individual call buttons for other monitors in the system.
Clear and bright images displayed on the color TFT LCD monitor
Supports three color video door stations and 5 inside monitor stations
Instant voice call-in with image
Selective Call or All Call
Chime or receiver volume control
Optional selective door release with RY-3DL Door Release Relay Module (sold separately)
Total distance looped between monitors is 330′