GT-1M3-L Master station (hands-free)

A standard video master station with an easy-to-use interface. Connect with 4 wires, but consider the polarity of the audio channel (R1 and R2 connectors) and separate 2 wires for the video channel (B1 and B2 connectors). The master stations are typically connected in series, but can also be connected in a star configuration by using, for example, the GT-4Z 4-way video distribution adaptor. There are adjustments for screen brightness and speaker/call tone volume on the side of the station. The lower right corner includes an option button, which can be used, for example, for activating an additional light or for controlling a second door.