Isolated MOSFET MOS Field Effect Tube Module 3V / 5V FR120N LR7843 D4184 AOD4184 Board Replacement Relay For Arduino and MCU Module features: 1, with optocoupler isolation, control signal and controlled equipment power isolation, greatly improve the rigid interference. 2, compatible with microcontroller and Arduino light control board, 3V or 5V signal 3, high level start, low level stop, PWM speed regulation 4, widely used to control motor start and stop, solenoid valve and other tributary equipment 5, there are various specifications of MOS tube to provide choice, Such as FR120N: 100V 9.4A LR7843 : 30V 161A AOD4184: 40V 50A 6, the signal input side can weld its own terminal or pin, compatible with the bread board 7, the output can be welded terminals or directly welded wire 8, the module size 23mm X 16mm has 2 2mm diameter screw holes, hole spacing 8mm _x000D_ _x000D_