The DSRC-FMOIR is an open loop daylight sensor that measures the natural light contribution in order to automatically adjust the lighting zones. It is part of the Room Controller and DLVP system and provides three easily distinguished light levels, Low (3-300 lux), High (30-3000 lux), and Direct Sun (300-30000 lux). The high light sensor range is selected by default, although this can be adjusted using the IR handheld programmer.