Usage Tips:1. USB serial port control relay, serial port control, long life, overcurrent protection2. USB serial port control relay, ly upgraded and advanced version, with optocoupler protection circuit to prevent interference and high-speed transmission3. The output terminal of the relay can be regarded as an electronic switch, controlling the on and off of the circuit. There is actually no voltage output at the load end of the module.4. When there is no voltage in the relay coil, the relay does not pull in, and the common terminal (COM) is connected to the normally closed terminal (NC). When there is voltage, the relay pulls in, and the common terminal (COM) is connected to the normally open terminal (NO).5. USB serial port control relayRelay path: 5VPower supply method: Type-c interface/pin headerControl interface: Type-c interface/pin headerMicrocontroller chip: GD32F103C8T6Baud rate: 115200bpsLED indicator light: power indicator light and relay status indicator lightCircuit design: With overcurrent protection and optocoupler protection functionsOutput type: relay common terminal, normally open terminal, normally closed terminalLoad type: Load powered at 10A/30VDC, 10A/250VACProduct size: About 58x32mmDifferent Batches May Have Differences In Product Appearance, Color, And Printed Characters, Which Will Not Affect The UseColour:As ShownMaterial:PCBType: DSTUR-T30 3 ChannelPackage Contents:1x Serial Port Control Relay (Type C)1x Type-C Cable (50cm)1x 10Pin 2.54mm Female To Female Dupont Cable (20cm)Only the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.