AIPHONE KB-3HRD COLOR SUB MASTER STATION FOR KB (MAX 4 PER SYSTEM)

The KB-3HRD is the sub monitor for the KB series open voice color video series. The unit connects to a master KB-3MRD and an additional KB-3HRD sub monitor. (or KB-3SD audio only sub). The unit features a 4"" TFT color monitor, a TALK button for PTT or VOX activate communication, PanTilt Controls, a door release button, call-in LED's, door chime and communication volume controls and brightness control.