The Zum™ Contact Closure Output (ZUMMESH-CCO) adds a low-voltage SPDT form C contact closure to a Zum commercial room lighting control system to enable integration with an HVAC system or other equipment. The contact closure is controlled by the occupancy or vacancy sensors in the room. When the room is occupied, the relay engages. When the room is vacant, the relay disengages.

The ZUMMESH-CCO is a small module that snaps onto a Zum J-Box Load Controller or Zum J-Box accessory power supply (ZUMMESH-JBOX or ZUMMESH-JBOX-PSU). The Zum J-Box device provides power and wireless communications for the ZUMMESH-CCO.