Master Station/Door Station Kit, Indoor/Outdoor, Height (In.) 6 7/8 in, Width (In.) 3 15/16 in, Depth (In.) 4 1/4 in, Door Station Height (In.) 6 7/8 in, Door Station Width (In.) 3 15/16 in, Door Station Depth (In.) 4 1/4 in, Master Depth (In.) 1 1/16 in, Master Height (In.) 7 5/16 in, Master Width (In.) 3 1/8 in, Distance (Ft.) @ 18AWG 1,020 ft, Distance (Ft.) @ 22AWG 360 ft, Wiring Conductors 2 Conductors, Wire Type 22 AWG, Power Source 12V AC, Voltage 15V AC, For Use With DB Series