The SP44.0 is an electronic part manufactured by Teko. It is housed in a box measuring 56.5x52x11mm and is designed to control voltage and current levels and protect electronic circuits against overloads. It has a built-in temperature sensor to detect heating and automatically switch off or switch on circuits as necessary. The SP44.0 is ideal for use in battery-powered devices, inverters, and solar panel installations. It is UL approved and has thermoplastic insulation with IP 67 protection rating.