Used in electric oven, water heater, lamps, small motor, electric iron, etc. How to use: The input is connected to DC9-60V. The output cable is connected to the cable of the electric heater or to the motor devices. Then turn the knob to adjust the speed, voltage, temperature Package included: 1pc x Voltage Regulator Note: The load does not exceed the maximum power, otherwiseit will burn the module and electrical equipment; use a resistive load as far as possible; reduces the inductive and capacitive load power considerably. (it is best to leave more than half of them) Size: 85-58-38mm Delivery Quantity: 1 piece, Kind tips 1. Package content: only the above package content, excluding other products. 2. The size is measured manually, please allow 1-2 cm measurement error. 3. Due to different monitors and lighting effects, the actual color of the item may be slightly different from the color shown on the picture. Products from GuanGuan's store