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Module: LR7843; Voltage:30V 161A. Universal Compatibility: Compatible with both single chip and control board, accepting 3V or 5V signals effortlessly. Versatile Functionality: Enables high-level start, low-level stop, and PWM speed adjustment for precise control and operation. Optical Isolation Technology: Equipped with optocouplers that isolate control signals from the device's power supply, ensuring high resistance to interference. Flexible Wiring Options: Allows user-friendly wiring with the choice of soldering terminals or pin connectors on the signal input side, and soldered terminals or direct wiring on the output side.