AMERICA'S BEST SELLING AUTOMATIC SOLAR CONTROLLER BY GOLDLINE GOLDLINE'S GL-235 IS THE COUNTRY'S LEADING AUTOMATIC SOLAR CONTROLLER AND IS DESIGNED FOR EASY DEPENDABLE OPERATION. THE UNIT'S MICROPROCESSOR-BASED TECHNOLOGY ENSURES RELIABLE AND ACCURATE PERFORMANCE. SIMPLY SET THE CONTROLS FOR THE DESIRED POOL TEMPERATURE AND THE UNIT WILL HEAT YOUR POOL WHENEVER THERE IS ENOUGH SOLAR HEAT AVAILABLE. GOLDLINE'S SOLAR CONTROLLER CAN ALSO BE PROGRAMMED TO COOL YOUR POOL ON HOT SUMMER EVENINGS AND TO PROTECT AGAINST FREEZING. THE UNIT COMES COMPLETE WITH A 3-WAY MOTORIZED DIVERTER VALVE AND A WATER AND PANEL SENSOR. THE DIVERTER VALVE IS SET UP FOR 2" DIAMETER PLUMBING AND IS 110/220V CONVERTIBLE. ADD AMERICA'S MOST RELIABLE AUTOMATIC SOLAR CONTROLLER TO YOUR SOLAR SYSTEM WITH GOLDLINE'S GL-235 CONTROLLER. BACKED BY A 5-YEAR LIMITED WARRANTY.