WattStopper® Occupancy sensors are designed for automatic lighting control in warehouse high bay applications. All models contain a passive infrared sensor (PIR). The coverage area is determined by the selected lens module. The lenses are interchangeable with any HBP series sensor. Compact line voltage sensor with integral lens for all high bay applications. 360° coverage from 15 to 40 ft, rotatable snap-on aisleway masking. Adjustable time delay and hold-off day lighting level.