High Bay Aisle Way sensing is made cost effective by the HMR-10 Series occupancy sensor. For over a decade this Passive Infrared PIR sensor has been the choice of HID Bi-Level fixture manufacturers, as well as warehouse retrofitters using T/5 and T-8 Fluorescent lighting. The HMR-10-SH controls Bi-Level HID lighting with a Start-to-High timer and the HMR-10 controls fluorescent fixtures; both without the necessity of a Power Pack. The Start to High timer in the HMR-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 premature failure by warming up in the full bright mode. The HMR-10 is used when all the fixtures in the aisle are controlled together. For long aisles consider using multiple HMR-50 sensors in the middle and HMR-10s at the ends of the aisle. If individual fixture control is desired, refer to CMR and CMRB Series sensors.