The gear ratio regulator is used in heating ppad and other
USB gear ratio regulator,electric eye protection,electric heating
clothes,electric heating knee pad,electric heating,electrc heating
protecting shoulder waist support.
Switch box with a light touch switch,Three Led lights and IC
module,By the light touch weitch signal through the IC module for
PWM output,different PWM output frequency respectively by three
leds are divided into high,medium and low-grade,So as to achieve
temperature adjustment effect with pilot light indication.