ONS is the fundamental device of OS-NET solution. It is a self-contained device which combines wireless network connectivity, occupancy sensor, daylight sensor, and lighting control output in a compact housing to provide sophisticated controls to the connected lighting on an individual or group basis. The ONS not only controls the connected lighting in the programmed mode independently, but also acts as a network node to broadcast OS-NET commands for group control wirelessly. Each sensor can be assigned to be member of maximum 4 groups for coordinated control. All sensor setting, including sensitivity, burn-in duration, delay time, ambient light level, sensing control mode, grouping/regrouping, can be configured in individual or group basis via a 2-way handheld remote programmer from the floor.