Bryant/Hubbell MSAR Add-A-Relay (Bryant is a division of Hubbell). For use with MSCU series control units and Bryant MSD, MSU and MSP series ceiling and wall mount sensors. Contains an internal relay for control of an external lighting load. Requires a 24V DC power supply from the Bryant MSCU series control unit. Typically used when: 1) It is desired to switch more than one circuit when occupancy is sensed, 2) The lighting load exceeds the maximum rating of the control unit.
