01-07-2021, 01:24 AM
here is node running on Node-Red by Raspberry pi4 to control one relay ON/OFF by USB port. (use USB-RS232 convert cable) suit for all model of KC868 relay controller.
KC868-Relay-Controller-USB-RS232.zip (Size: 2.98 KB / Downloads: 454)
KC868-Relay-Controller-USB-RS232.zip (Size: 2.98 KB / Downloads: 454)