Special Features:

All operating controls mounted on front panel; male connector, cannon dd50p; mating female connector, m24308/2-5 or equal; embedded light plastic panel with white illumination; six transmitters controlled by seven-position rotary switch with seventh position for intercommunication on interphone line; ten receivers controlled by switches; one direct input receiver; volume control 40 decibel range from max. Audio output

Properties:

A component which determines the mode of operation of a intercommunication set.