USB serial port control relay, serial port control, long life, overcurrent protection USB serial port control relay, newly upgraded advanced version, with optocoupler protection circuit to prevent interference and enable high-speed transmission The output terminal of the relay functions as an electronic switch, controlling the on and off of the circuit. There is no voltage output at the load end of the module. When there is no voltage in the relay coil, the relay remains disengaged, and the common terminal (COM) is connected to the normally closed terminal (NC). When voltage is applied, the relay engages, and the common terminal (COM) connects to the normally open terminal (NO). USB serial port control relay Relay path: 5V Power supply method: Type-C interface / pin header Control interface: Type-C interface / pin header Microcontroller chip: GD32F103C8T6 Baud rate: 115200bps LED indicator lights: power indicator and relay status indicator Circuit design: includes overcurrent protection and optocoupler protection Output type: relay common terminal, normally open terminal, normally closed terminal Load type: supports load up to 10A/30VDC, 10A/250VAC Product size: approximately 58x32mm Note: Product appearance, color, and printed characters may vary slightly between batches, but this does not affect functionality Color: As shown Material: PCB Model: DSTUR-T30 3 Channel Package Contents: 1 x Serial Port Control Relay (Type-C) 1 x Type-C Cable (50cm) 1 x 10Pin 2.54mm Female to Female Dupont Cable (20cm) Only the items listed are included; other accessories are not included Note: Lighting and display differences may cause slight variations in color between the image and the actual item. Measurement error allowed is +/- 1-3cm.