The HLC-1e by Custom Automated Products protects your garden from overheating. The HLC-1e constantly monitors your garden temperature. If the garden exceeds the temperature that you have set, the HLC-1e turns off your lights so that crop damage will not occur. It then turns on the Temp Exceeded" light to let you know that an overheating situration occured. When the temperature returns to normal, it will turn your lights back on. It comes with a 15' remote temperature sensor. The HLC-1e is rated at 15 amps @ 120 volts. 3 year warranty.