Power supplies in the MCS Series offer a variety of configurations for powering up to 16 units from a single power source The power supplies provide 24V AC output for 4, 8, or 16 units. To compensate for voltage losses over long wire runs, 28 VAC outputs also are available on most models. The power supplies have a selectable input of 120 or 240V AC and are packaged in an easy-to install metal enclosure that has ample room for wiring connections and conduit entries.