RS232C, Serial Comm. Relay Controller, 3 Form C , 6A 250VAC 28VDC max., 12V RS232C straight cable. They can connect loads up to 250VAC/28VDC at 6A. Send the command string `SF00000000X` followed by a newline character. The `X` should be a digit from 0 to 7. Upon successful execution, a period character `. byJuly 5, 2026
