[NTLUG:Discuss] temperature monitoring

[Fred James]

All
In an all Linux/UNIX environment, I have a need to monitor the 
temperature of the room.  I want to be able to check on it remotely, and 
receive warnings when if temperature goes out of range.  In Googling I 
found several products, but I want to ask this group:  Has anyone had 
experience (good or bad) with this idea, or any particular product or 
approach?  I would prefer something that works with Linux, or a stand 
alone (one unit said it had a self contained WEB server and could be 
accessed by any browser, or they would supply details for an interface).

Thank you in advance for any help you may be able to offer.
Regards
Fred James