CAFRAMO PALI 400 Watt approved thermostatically controlled bilge/ engine room heater. Automatic controlled heater. 120 Volt unit with 20 ft cable- 3.4 Amp current draw. Activates at 5 degrees C, automatically turns off at 15 C. This unit is like new and can be tested in your freezer. Cost $350.00 new. No more need to drain the engine over the winter months.