Description: With optocoupler isolation, control signals and charged equipment power supply isolation, greatly improving the just interference. Compatible with single chip and Arduino light control board, 3V or 5V signal High-level start, low-level stop, PWM speed Widely used to control the motor start and stop, solenoid valves and other tributaries There are a variety of specifications MOS tube to provide choice, Specification: The signal input side can own welding terminal or pin, compatible with the breadboard The output can be welded to the terminal or direct wire Material: Plastic Size: Approx. 33x15mm / 1.3x0.59inch Package Includes: 1 Piece of Field Effect Module FR120N MOS 1 Piece of 3 pin Terminal 1 Piece of 2 pin Terminal 1 Piece of 2 pin