usbrelay - control or query USB HID relays

usbrelay allows for querying and setting the state of USB HID electrical relays.  If no ACTION is passed,
       the  state  of all relays is printed to stdout.  RELID_N=[0|1] sets the N-th relay on module RELID to off
       or on.

       Multiple actions can be performed with one command

       eg:

       usbrelay REL0A_1=0 REL0A_2=1 REL0B_2=0...

       The Relay module ID can be changed on DCTTECH relays: RELID_0=NEWID sets the relay RELID to NEWID

       usbrelay - control or query USB HID relays

-d, --debug
              Produce debugging output

       -q, --quiet
              Suppress output

       -?, --help
              Print the help menu

       --usage
              Print a usage description

       -V, --version
              Print the program version

       /usr/share/doc/usbrelay/README.md.gz

usbrelay                                           24 Jan 2022                                       usbrelay(1)

usbrelay [OPTION...]  [ACTION...]