New HOBO® U12 Thermocouple Logger accepts J, K, S, or T thermocouple probes, monitors temperatures up to 3200°F

BOURNE, MA, September 20, 2004 - Onset Computer Corporation, the leader in reliable, battery-powered data loggers, today introduced the HOBO U12 Thermocouple Logger, a 12-bit resolution data logger for measuring and recording temperatures from J, K, S, or T thermocouple probes. When combined with a weatherproof enclosure, the U12 Thermocouple Logger can be used in a variety of outdoor temperature monitoring applications, such as tracking temperatures during controlled forest fire burns.

Key features include:

� Choice of external probes - Single-channel logger accommodates J, K, S, and T thermocouple type probes (purchased separately) with standard subminiature connectors. Fine-tip thermocouple probes provide fast response times and enable easy, non-invasive placement inside small objects.
� Wide temperature range - logger can measure and record temperatures from -200°F to 3200°F
� Flexible software support - users can choose either Windows or Mac OS X software to plot and analyze data.
� Direct USB interface - enables high-speed data offload (43,000 measurements in as little as 30 seconds).

ONSET INTRODUCES NEW THERMOCOUPLE LOGGER/Page 2

For data plotting and analysis, Onset offers GreenLine® software (for Windows), and HOBOware' software (for Macintosh). These software packages enable users to launch and readout HOBO U12 loggers with point-and-click simplicity, and offer a number of other convenient features, such as one-click conversion of data for easy upload into spreadsheet applications.

The HOBO U12 Thermocouple Logger is currently available from Onset, and is priced at $119 U.S. Greenline and HOBOware software packages are priced at $59 U.S. and are also currently available. J, K, and T Thermocouple probes are sold separately, and are priced from $15 - $55 U.S.

About Onset Computer Corporation
Onset Computer Corporation has been producing small, inexpensive, battery-powered data loggers since 1981, and has sold over 600,000 units used throughout the world by more than 26,000 customers. Onset data loggers and weather stations are used in a broad range of research and commercial applications in the natural resources market, including agriculture, forestry, fisheries, field biology, hydrology, and meteorology.