This USB relay Board allows you to control the switch of the external circuit through the serial port. You can use the serial port software to directly control it, or you can use Python, C++, C# and other languages to write programs to do some interesting experiments.

Specification:
Model: SH-UR01A
Main chip: Silicon Labs CP2102N
Interface: serial port
Pin Definition: COM,NO,NC
Connectors: USB Type A, 3 PIN Terminal Block
USB 2.0; compatible USB 1.1
Plug & Play after one time driver installation;

Precautions:
If you need to use this USB controller to control AC switching, in order to protect your computer, we recommend you to use a USB isolator (ASIN:B093LKN3YH)

OMRON G5V-1 Relay:
Wide switching power of 1 mA to 1 A.
Rated load: 0.5 A at 125 VAC; 1 A at 24 VDC
Rated carry current:2 A
Max. switching voltage:125 VAC, 60 VDC
Max. switching current:1 A

AT Command:
Default UART Setting: Baud rate：9600 ;Stop Bits:1 ;Parity：None; Data Bits：8
1, AT ; Test Command, you will get "OK"
2, AT+CH1=1; Close the relay of channel 1
3, AT+CH1=0; Turn on the relay of channel 1
4, AT+BAUD=115200; Modify the baud rate to 115200

Packing list:
1 X SH-UR01A USB Relay controller
1 X USB extension cable(1M/3.2FT)
1 X User Manual

WARRANTY:
DSD TECH offers a 1-year warranty and lifetime technical support for this USB to USB Relay controller.If you meet any questions, Please contact us, We will fix your issue within 24 hours.