High Bay Aisle Way lighting control is easily accomplished by the HM-10 Series Passive Infrared (PIR) occupancy sensor. Both HID Bi-Level and T-5 / T-8 Fluorescent systems can be switched using HM-10 Series sensors and standard power packs. The HM-10-SH version controls Bi-Level HID lighting with a Start-to-High timer, whereas the standard HM-10 version controls individual fluorescent fixtures. The Start to High timer in the HM-10-SH allows the sensor to turn the lights to High upon initial power up. This timer, typically set at 20 minutes, prevents the HID lamps from premature failure by warming up in the full bright mode. Designed to be mounted 30 to 45 feet high at the end of the aisle; the HM-10 views up to 110 linear feet of aisle way space. For inner aisle coverage consider the CMB-50 Bi-Directional Aisle Way sensor, or the CM-6 360 degree. View sensor for circular coverage. For HID Line Voltage applications, consider the HMR-10 and CMR-6 products. When controlling full circuits of fluorescent fixtures, the low voltage system is the best choice.