HID Bi-Level lighting provides automatic energy savings by detecting personnel and vehicles in aisles or spaces. This can reduce power consumption in half, because HID lamps are dimmed to 50% when the lit areas are unoccupied.

Most existing HID fixtures can be quickly field-modified to include occupancy sensor operation. The sensor detects body heat or machine heat (such as a forklift), and the lights automatically turn on to "full". After people and vehicles leave the area the lights dim to 50%. Dimming will occur 1-30 minutes (adjustable) after the area is vacated.

When the HID lights are first turned on, the sensor kit automatically establishes a 15 minute full brightness warm-up. The HID light can then cycle to the reduced power mode when the space is unoccupied. While the space is occupied the lights stay at full brightness.

Two types of sensor lenses are available: Rectangular  for aisles and  circular  for open areas.

Lights can be daisy-chained, controlling multiple lamps with one sensor.

Typical Application

In a typical application, a sensor will control a set of lights at the end of the aisle. The internal lights will have a sensor every three lights.