I'm after a temp and humidity sensor recommendation, with Server 2012 compatible software.
It also needs to have email alerting, specifically that it sends an alert when it loses connectivity to the sensor - currently we have an Xsensior sensor which (a) seems to have died and (b) doesn't do this particular alert via its software.
Have you considered a (cheapish) weather station? You'd probably have no need for the external part, but the internal units are often very capable and accurate, with software that can do alerts.
We've recently settled with one of these for temperature monitoring of a remote hub room (however it's temperature only, not humidity): http://www.amazon.co.uk/USB-thermome...erature+sensor
The software it comes with isn't the greatest, however we've hooked it up to an old netbook, and with a PowerShell script that parses the CSV it updates every minute, sends us an email alert if the temperature exceeds a predefined value. It works very well, it actually saved us some trouble just a few weeks ago in the hot weather when the AC packed up in that room.
Maybe not a direct answer to your question, but thought I'd throw it in there.
In the realms of DIY : Arduino + DHT11 combined temp+humidity. There's mature library support for the device with example code. Interfacing is a matter of 3 wires and a 10K resistor. It can't be more than a few lines of powershell to read the serial port evaluate the readings and fire off an email. Wire up and rapid blink a superbright LED for a visual warning (and most importantly to up the flashing LED count in the server room).
Suggestions appreciated, but we're so busy I don't have the time to do anything complex. I need an off-the-shelf solution ideally.
Have you thought of a Climate 1u rack system?
Magiant USB temperature sensors provide both temperature and humidity monitoring. They are cheap and reliable and can be connected to Nagios, Labview, used as stand alone application and remotely monitored using web app, iOS and Android apps.
Hope this could help.
Kudos to Xsensior / Openxtra because they added the function to alert for a disconnect to their software, after I logged it as a wishlist!