Recommend a basement freeze alarm?

[szmaine]

I have been considering getting a freeze alarm for the basement since I would like to see if our stove
can handle heating the whole house but don't want to freeze the pipes in the process.
I don't know anything much about freeze alarms and wonder if anyone can recommend a good economical unit?

 

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http://doitbest.com/Thermostats+and...t-sku-539546.dib?memberid=1082&associate=true
This is like $43.00 but it requires you to call via phone and check on it.

http://doitbest.com/Thermostats+and...t-sku-510505.dib?memberid=1082&associate=true
About $30.00 All you need to do is plug it in to a wall socket near the area you want monitored. then plug in what ever you want to alert you to the issue. Either light, a loud radio, anything that will alert you.

Not try to be an advertiser / sales person here, but maybe one of these will help.