The Bus Power output is for connection of separately powered multiplex devices, such as the DS7432 Eight- input Remote Module. If using separate powered detectors, they should be powered from the auxiliary power terminals of the control panel.
Up to 610 m (2000 ft) of 0.8 mm (22 AWG) or 1525 m (5000 ft) of 1.2 mm (18 AWG) wire may be used for the multiplex loop. Do not use shielded cable. Do not share cable with the keypad lines.