Boost your energy efficiency with this TriStar solar panel battery charge controller. It offers reliable charging of solar batteries. Select load control, charging, or diversion regulation modes of operation. It has a digital meter that displays system information and set points. A remote temperature sensor is rated for operation at -22 degrees Fahrenheit to 176 degrees Fahrenheit. It's made of powder-coated steel and has a vertical mounting enclosure. The charger is rated for use indoors with short-circuit overload protection.