Seeit USBM-RELAY04 Relay Control Card Module USBM-RELAY04

The Seeit interface board can control various appliances and equipment using its relay modules. It connects directly to a computer via the USB port using a standard USB-A to USB-Micro cable. Users can develop their own applications based on provided source code and functions written in C language. These functions enable management of the virtual serial port created by the driver, allowing for seamless integration and control of the interface board from the computer.

Power connector jack
USB control chip CH340
Port speed 9600 bds