Isotherm's ASU Automatic Start Up energy management system can dramatically reduce power drain on the batteries while maintaining constant temperatures. The innovative ASU feature senses when surplus power is available-from the alternator, solar panels, or wind chargers and switches the compressor to high speed, quickly freezing the holding plate.Thermal energy stored in the holding plate will keep the refrigerator cool for many hours.The ASU control then will restart the compressor at a low speed, using a minimum of power to maintain a stable temperature.

• Always uses the least amount of battery power.
• Excellent temperature stability and control.
• Very quiet operation, especially in low speed.
• Do-it-yourself installation pre-charged with R-134a refrigerant.
• Operates on 12 or 24 volts DC.

KEEP YOUR COOL WITH ISOTHERM
316 stainless steel holding plates contain a non-corrosive solution that freezes at 15 degree F, storing cooling energy whenever surplus electrical power is available. The hermetically sealed compressor is the same type used in millions of domestic refrigerators and requires no maintenance. Installation is quick and easy with leak-proof quick connect fittings. The holding plate can be mounted up to 10 feet away. Water-cooled systems have a corrosion resistant copper-nickel condenser/heat exchanger with a reliable, Shur-flo selfpriming cooling water pump. Cooling water can be drawn from either a sea-cock or circulated from the boat's freshwater tanks.