How to read CPU temperature on 1100, 2100, and 4200?

Joe0x7F

Hello everyone,

Somehow. I have missed how to read the CPU temperature on these 3 devices.

Is this info already displayed somewhere in pfsense or is there a command-line option I can run to see this information?

Thanks!

Gertjan

@Joe0x7F said in How to read CPU temperature on 1100, 2100, and 4200?:

Somehow. I have missed ...

It's here :

The GUI gets it's info from here.

On my 4100 :

[25.07.1-RELEASE][root@pfSense.bhf.tld]/etc/inc: sysctl dev.cpu.0.temperature
dev.cpu.0.temperature: 50.0C

OpIT GmbH

We are using NET-SNMP und PRTG

CPU_Temperatur
/sbin/sysctl -n dev.cpu.0.temperature | tr -d C

System_Updates
/usr/local/sbin/pfSense-upgrade -c

Package_Updates
/usr/sbin/pkg upgrade

Joe0x7F

Thanks for the ideas. But, still no luck :(

No “temperature” on my 2100 dashboard.

Version 25.07.1-RELEASE (arm64)
built on Wed Aug 20 8:17:00 EDT 2025
FreeBSD 15.0-CURRENT

https://192.168.1.1/diag_command.php
Shell Output - sysctl dev.cpu.0.temperature
sysctl: unknown oid 'dev.cpu.0.temperature'
Execute Shell Command
sysctl dev.cpu.0.temperature

Shell Output - /sbin/sysctl -n dev.cpu.0.temperature | tr -d C
Execute Shell Command
/sbin/sysctl -n dev.cpu.0.temperature | tr -d C

Shell Output - /usr/local/sbin/pfSense-upgrade -c

Updating repositories metadata...done.
Your system is up to date
Execute Shell Command
/usr/local/sbin/pfSense-upgrade -c

Shell Output - /sbin/sysctl -n dev.cpu.0.temperature | tr -d C
Execute Shell Command
/sbin/sysctl -n dev.cpu.0.temperature | tr -d C

bolded text

SteveITS

@Joe0x7F I don't think the ARM devices have a temperature. It may not be possible for them to get that hot. ;)

It does show on the 4200 though.

Gertjan

@Joe0x7F said in How to read CPU temperature on 1100, 2100, and 4200?:

<NOTHING DISPLAYED>

If nothing comes back, the GUI executes another command.
You tested that one ?

patient0

@Joe0x7F no hardware temperature sensor for 2100 and 1100, as stephenw10 explained in another post (use the search, Luke):

https://forum.netgate.com/post/1016898