HLC Advanced HID Lighting ControllerAdvanced HID Lamp Control High temperature shutdown with selectable delay Combines all of the HLC1, HLC2, and HLC3 functions into one unit. Selectable switch lets you choose whether to run the controller for temperature shutdown, on delay, or both. The Temp setting shuts off the outlet when chosen temperature is reached (and back on when it comes down 5 degrees). Perfect for protecting the crop in the event of overheating. Delay provides a 15 minute