$ sudo apt-get install nut

Add the following to /etc/nut/ups.conf:

[openups]
    driver = usbhid-ups
    port = auto
    desc = "OpenUPS"

And comment out the line maxretry = 3.

Try if it works:

$ sudo upsdrvctl start

Then, edit /etc/nut/nut.conf such that the last line reads

MODE=standalone

Finally reboot and run

$ sudo upsc openups@localhost

This should display information about the connected UPS. Check the device.model parameter and make sure that it is OPEN-UPS

     {{ :cs:ups_setup:zippy_settings.7z |}}