Measuring 2 1/4 in. long x 5/8 in. dia, MicroTemp provides instant accept or reject capability in harsh environments. Waterproof, Type 316L SS recorder has green and red LEDs and programmable alarm limits that can be set for specific temperature range over time. Reading rates vary from once every 2 sec to once every 12 hr. All data are date stamped and NIST traceable.