This switching regulator is designed to control the input power of the electrical heating devices such as heating socks and gloves. It is designed to be attached to the rear side of the instrument panel. The power is adjusted by the control knob. The left endstop means minimum and the right endstop means maximum power rate. The red pilot light located near the control knob indicates that the device is connected to the electric power. The switch-mode technology ensures the high efficiency.