yes it does for the 4801 using
http://www.freebsdsoftware.org/sysutils/env4801.html

function get_temp() {
    switch(get_hwtype()) {
        case '4801':
            $ret = rtrim(`
/usr/local/sbin/env4801 | /usr/bin/grep Temp |/usr/bin/cut -c24-25`);
            break;
        default:
            return;
    }

    return $ret;

On Tue, Jan 5, 2010 at 4:54 AM, Andrew White <andywhite at gmail dot com> wrote:

> pfsense appears to have some support
>
> http://forum.pfsense.org/index.php/topic,15194.msg79757.html#msg79757
>
>  <http://forum.pfsense.org/index.php/topic,15194.msg79757.html#msg79757>I
> might be able to borrow a soekris board next week and check it out.
>
>
> On Mon, Jan 4, 2010 at 10:40 PM, N.J. Mann <njm at njm dot me dot uk> wrote:
>
>> In message <1262643464.3268.100.camel@mvn-desktop>,
>>         Marten Vijn (info at martenvijn dot nl) wrote:
>> > On Mon, 2010-01-04 at 21:40 +0000, Andrew White wrote:
>> >
>> > so some results 8.0-STABLE FreeBSD 8.0-STABLE #0 r201528
>> >
>> > soekris 4501 => not working
>>
>> I quick browse of the specifications on the Soekris web site gives the
>> following data:
>>
>>  4501 - no mention of temperature and/or voltage monitor
>>  4511 - as 4501
>>  4521 - as 4501
>>  4526 - 'temperature sensor'
>>  4801 - 'temperature and voltage monitor'
>>  4826 - as 4526
>>  5501 - as 4801
>>
>>
>> Cheers,
>>       Nick.
>> --
>>
>>
>