Master Station, Indoor, Height (In.) 1 7/8 in, Width (In.) 6 7/8 in, Depth (In.) 7 5/8 in, Door Station Height (In.) 1 7/8 in, Door Station Width (In.) 6 7/8 in, Door Station Depth (In.) 7 5/8 in, Master Depth (In.) 1 7/8 in, Master Height (In.) 6 7/8 in, Master Width (In.) 7 5/8 in, Wiring Conductors CAT-5e, Wire Type CAT-5e, Power Source 24V DC, Voltage 24V DC, For Use With AX Series, Includes Mounting Hardware