Meet the TemperatureAlert: a device that monitors the ambient temperature in your server room, office, or commercial building and provides you with an alert when the temperature rises or falls outside your acceptable range. The WiFi 330 can be configured with one to four temperature or combined temperature/humidity sensors. It connects to your network wirelessly and is powered by an AC wall adapter.
You get real time graphing and XML support. You can connect up to 4 probes. You don’t need to leave your computer running. Sets you back under $304.