Fangrui Product Details Fangrui Product Details 1. Usb Serial Port Control Relay, Serial Port Control, , Overcurrent Protection 2. Usb Serial Port Control Relay, Newly Upgraded And Advanced Version, With New Optocoupler Protection Circuit To Prevent Interference And High-speed Transmission 3. 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 Relay Relay Path: 5v Power Supply Method: Type-c Interface or pin Header Control Interface: Type-c Interface or pin Header Microcontroller Chip: Gd32f103c8t6 Baud Rate: 115200bps Led Indicator Light: Power Indicator Light And Relay Status Indicator Light Circuit Design: With Overcurrent P Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-YJL official store