The Passive Infrared Low Voltage Occupancy Sensing Wall Switch is a motion sensing lighting control and that is used for energy savings and convenience. The wall switch that utilizes an isolated Form-C relay that integrates directly with lighting control, building, and HVAC systems. The ONW-P-1001-SP is designed to detect motion from a heat-emitting source (such as a person entering a room) within its field-of-view and automatically switch lights ON. These sensors have multi-segmented lenses. The sensor includes self-adaptive technology that continuously self-adjusts sensitivity and time delay in real time, maximizing the potential energy savings that are available in the particular application. The EcoMeter provides a visual indicator of energy usage, increasing end user awareness and reminding individuals to take control of their lighting to maximize energy savings. HVAC mode allows the load connected to the Form C BAS relay to remain ON when the lights are turned OFF manually.