All zone controllers support an occupancy sensor. The controller can switch from occupied to standby mode due to the occupancy sensor. This occurs after a set period of time, when local activity is absent. When in standby mode, the zone controller uses standby temperature setpoints that are higher and lower than the occupied cooling and occupied heating temperature setpoints. The standby setpoints reduce the demand for heating and cooling in an unoccupied zone and save energy as a result. When VAV boxes are in standby mode, the application uses unoccupied flow setpoints in addition to standby temperature setpoints. To enable the occupancy sensor, set the Occupancy Mode parameter to external in the Control Setup screen in the Zone View of the SBH. Use the sensor to set the occupancy sensitivity and time delay to standby. Refer to Appendix B in the Verasys User’s Guide for more information on each parameter.