Call Audio Master Station Indoor Height (In.) 2-1/8 Width (In.) 7-1/16 Depth (In.) 5-5/8 Door Station Height (In.) 2-1/8 Door Station Width (In.) 7-1/16 Door Station Depth (In.) 5-5/8 Master Depth (In.) 2-1/8 Master Height (In.) 7-1/16 Master Width (In.) 5-5/8 Distance (Ft.) @ 18AWG 1570 Distance (Ft.) @ 22AWG 650 Wiring Conductors 2 Conductors Wire Type 22 AWG Power Source 6VDC Voltage 6VDC For Use With LE Series Includes Mounting Hardware