https://mn3m.info/posts/configure-ups-monitor-using-nut-on-debian/
nut.conf
MODE=standalone
ups.conf
[ab_ups]
driver = usbhid-ups
port = auto
desc = "AlphaBit UPS"
LISTEN 127.0.0.1 3493 # localhost
LISTEN 192.168.1.5 3493 # interface ip
... :)