The HLC-2e by Custom Automated Products protects your light from Hot Starts." A "Hot Start" is when your ballast attempts to resart the bulb without waiting for the bulb to cool off. The HLC-1e constantly monitors the power going to your light. In the event of a power failure, it will not allow the light to restart until 15 minutes after the power is restored. This prevents your light from attempting to "Hot Start" your bulb, preventing bulb damage and increasing bulb life. The HLC-2e is rated at 15 amps @ 120 volts. 3 year warranty.