USB Relay Controller: With this USB relay controller, you can control the switch on your computer or laptop (with USB adapter cable)
GD32F103C8T6 chip: no need to install the driver, can be connected to the computer to use, but also leads to the TTL pin, so you can use the uart level can also control it!
Industrial Grade Relay: With opto-coupler isolation circuitry, over-current protection, and maximum switching voltage (250 VAC, 30 VDC, 10A) See details page for more information.
Compatibility: This USB relay board is compatible with Windows 7, 8, and 10, as well as various Linux operating systems and Mac operating systems.
CUSTOMER SUPPORT: Permanent technical support and 1 year product replacement service is available. All questions will be answered within 36h. The required control commands and wiring are on the details page.