The DK1781S from NY Wholesale Intercom is a 8 Apartment Kit with 8 7" Monitor Saver Kit which includes DT17S, 7" monitor station, DMR11S/ID/S8, eight apt. entry panel, RH-MR11, surface box, DR-30-24, UL approved power supply, DT-DPS, power separator, DT-DBC4A1, output controller, DS-ERL, 3 amp relay, DIN Rail, AC Cord, HL-3, key fob.