This is the new Auto Cool Dx-150, rated at 150 amps DC. It has 10 bright red leds that show percent of fan RPM. It has push button temperature change. It will remember the temperature you set when the power has been cycled. It has Soft Start, A/C fan speed control, a cool down timer. You can shut down the cool down timer if you want. The DX-150 has 1/4 inch brass studs for Fan and Ground. Use any of our sensors for this new controllerl.