Trying to use snmp trap

Configuration
1

Hello, I’m trying to use snmp trap to my Bluewalker UPS VI1500 model, I started to see if I could run snmpwalk from my windows pc, and if I run the following command:

snmpwalk -v2c -c public 192.168.50.246 1.3.6.1.2.1.33.1.4.4.1.2.1

I get:

SNMPv2-SMI::mib-2.33.1.4.4.1.2.1 = INTEGER: 226

where 226 is the output voltage.
So I created a new yaml file into homeassistant called sensors_ups.yaml and then I included into the configuration.yaml file.
Inside the sensors_ups.yaml file I create the following sensor:

    - platform: snmp
      name: "UPS Output Voltage"
      host: 192.168.50.246
      community: "public"
      baseoid: 1.3.6.1.2.1.33.1.4.4.1.2.1
      unit_of_measurement: "V"

I restarted HA, but no sensor with this name was created. Which is wrong in this?

2

What I find odd is that you ask for OID …1.33…
And it returns …2.33…
Is this a typo or is this a clue on what could be the issue?

3

Actually it is not a typo, I run the command and the response is the second one.

4

Solved. Adding version: “2c” in the yaml file I get the sensor inside HA