HWG-STE Ethernet Thermometer

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1

I run a Cacti server at home. Among other things I measure a networked thermometer with two sensors attached. I want to decommission the Cacti server, but can only do this once I have the equivalent running in HomeAssistant.
Here’s my Yaml config entries:

# Configuration HWG-STE Ethernet Thermometer yaml entry
sensor:
  - platform: snmp
    name: "Inbound Temp" 
    host: 192.168.1.124
    version: "2c"
    community: <the snmp password that is configured on teh element>
    baseoid: 1.3.6.1.4.1.21796.4.1.3.1.4.2
    accept_errors: true
    unit_of_measurement: "Degrees Celsius"

# Configuration HWG-STE Ethernet Thermometer yaml entry
sensor:
  - platform: snmp
    name: "Return Temp" 
    host: 192.168.1.124
    version: "2c"
    community: <the snmp password that is configured on teh element>
    baseoid: 1.3.6.1.4.1.21796.4.1.3.1.4.1
    accept_errors: true
    unit_of_measurement: "Degrees Celsius"

Once I added these I did get a log entry on the version parameter, I had “2” instead of “2c”. So it seems both entries are acceptable.

But then, what comes next? How do I add it to the devices/integrations/entities?

And also if I may:

  • when should I use quoted strings, and when are quotes not required?
  • Unit of measurement, I couldn’t find what is legal there, so I came up with what I think is relevant. What should it be?

Thanks,
Hoot

2

Have a look at Sensor Entity | Home Assistant Developer Docs for valid unit_of_measurement. In your case, it should be °C

You should have 2 new entities: sensor.inbound_temp and sensor.return_temp, already (or similar). No need to add them anywhere besides the frontend, if you want them displayed.