Intercom, Master
) 6 7/10 in, Voltage 120V AC, 0.24A, Standards CSA, Marine, UL, Includes Call Button, Power Cord, Rugged Cast Aluminum NEMA 4X Housing, Volume Control.) 5 1/4 in, Master Height (In.Intercom, Master, Wall Mount, Gray, Signal Output 100db, Operating Range -31 to 150 Degrees F, 25 W, Master Depth (In.