There are a number of reasons why it might be nice to know the temperature of in a location without having to walk there and check. Wireless temperature monitoring is particularly important for geeks who are in charge of a server room where excessive heat can cause serious damage. Onset has announced a wireless temperature and humidity monitoring kit that keeps watch on critical infrastructure.
It is called the HOBO Wireless Temp/RH Monitoring Kit and to monitor critical temperature and humidity conditions as well as log data for trend analysis and notify the user of alarm conditions. The alarms can notify users via text message or e-mail without having to wire anything or set up the manual data offload. The monitoring kit is aimed at use in food-processing plants, office buildings, laboratories, and warehouses.
The system has a central point for monitoring warnings on a desktop computer. Data collected by the wireless monitors can be delivered to remote locations via e-mail or FTP. The system is flexible and can be expanded as additional monitoring locations are required. Sensors will activate an alarm when the temperature or humidity conditions exceed preset thresholds.
Alarms can also be programmed that will alert the user if one of the sensors is disconnected from the network. The wireless monitoring system isn't cheap at $899. For the money, you get three wireless temperature/RH data notes, and the receiver, software, and sensor mounting accessories. The system supports up to 100 nodes.