I agree with Chris -- we also have been using the ITWatchDogs products
for years,
and both the products and company have been wonderful to work with.
Tony Patti
CIO
S. Walter Packaging Corp.
Perhaps a little pricier than the others mentioned, but I've had great
experiences with the APC Netbotz line...the additional audio, visual and
door monitoring comes in handy, plus it plays well with snmp-based
trending tools like cacti and mrtg. Netbotz also monitors humidty, dew
point, airflow, etc, which is great for measuring differentiation
between cold and hot rows.