Call Audio Master Station Indoor Height (In.) 2-3/16 Width (In.) 8-1/8 Depth (In.) 7-1/2 Door Station Height (In.) 2-3/16 Door Station Width (In.) 8-1/8 Door Station Depth (In.) 7-1/2 Master Depth (In.) 2-3/16 Master Height (In.) 8-1/8 Master Width (In.) 7-1/2 Distance (Ft.) @ 18AWG 1600 Distance (Ft.) @ 22AWG 650 Wiring Conductors 20 Conductors Wire Type Shield Power Source 12VDC Voltage 12VDC For Use With LE Series Includes Mounting Hardware