Ok. I think i have found a solution. It is here: https://hub.docker.com/r/instantlinux/nut-upsd
I started this docker-container and there is version 2.8.2 there. Then i’ve set up NUT service in TrueNAS in slave-mode. It works and i have answer when typing
upsc ups@localhost:
Init SSL without certificate database
battery.charge: 100
battery.charge.low: 10
battery.charge.warning: 20
battery.mfr.date: UPS Manufacturer
battery.runtime: 1260
battery.runtime.low: 300
battery.type: PbAcid
battery.voltage: 13.5
battery.voltage.nominal: 12
device.mfr: UPS Manufacturer
device.model: Back Power Pro II 500
device.serial: 00000000000000000000
device.type: ups
driver.debug: 0
driver.flag.allow_killpower: 0
driver.name: usbhid-ups
driver.parameter.pollfreq: 30
driver.parameter.pollinterval: 2
driver.parameter.port: auto
driver.parameter.serial: 00000000000000000000
driver.parameter.synchronous: auto
driver.state: quiet
driver.version: 2.8.2
driver.version.data: CyberPower HID 0.80
driver.version.internal: 0.53
driver.version.usb: libusb-1.0.27 (API: 0x100010a)
input.frequency: 49.6
input.transfer.high: 290
input.transfer.low: 162
input.voltage: 221.0
input.voltage.nominal: 0
output.frequency: 49.7
output.voltage: 219.0
ups.beeper.status: enabled
ups.delay.shutdown: 20
ups.delay.start: 30
ups.load: 15
ups.mfr: UPS Manufacturer
ups.model: Back Power Pro II 500
ups.productid: a430
ups.realpower.nominal: 300
ups.serial: 00000000000000000000
ups.status: OL
ups.test.result: No test initiated
ups.timer.shutdown: -60
ups.timer.start: -60
ups.vendorid: 0483
i think now i will set-up proper shutdown. Will test it later, but i think its ok now!)