Video Door Station Indoor/Outdoor Height (In.) 2 1/2 in Width (In.) 5 in Depth (In.) 8 13/16 in Door Station Height (In.) 2 1/2 in Door Station Width (In.) 5 in Door Station Depth (In.) 8 13/16 in Master Depth (In.) 2 1/2 in Master Height (In.) 5 in Master Width (In.) 8 13/16 in Distance (Ft.) @ 18AWG 650 ft Distance (Ft.) @ 22AWG 330 ft Wiring Conductors 2 Conductors Wire Type Non-Shielded Power Source 24V DC Voltage 24V DC For Use With KB Series Includes Mounting Hardware