Thomas - 4527 Traceable Refrigerator/Freezer Plus Thermometer, with 5mL Vaccine Bottle Probe, -58 to 158 degree F;

Accurately monitor temperatures in freezers, water baths, heating blocks, incubators, and refrigerators with this enclosed temperature-buffered sensor. Bottle insulates sensor from rapid temperature changes when refrigerator door is opened.Triple display simultaneously shows high, low, and current temperatures. min/max monitors high/low readings overnight, on weekends, or for any time period-a significant advantage over current reading-only glass thermometers. Range is -58 to 158 degree F with a resolution of 1 degree and accuracy of +/-1 degree C. Alarm feature provides alert when temperature rises above or falls below a set point. Alarm is programmable in 1 degree increments. Visual and audible signals continue even if temperature returns to non-alarm range. Ten-foot micro-cable permits refrigerator doors to close on it. Solid-state probe eliminates mercury contamination in refrigerators. Probe is sealed in a miniature bottle (1 x 2.5") filled with nontoxic glycol. Solution is GRAS (generally recognized as safe) by the (Food and Drug Administration). Eliminates concerns about incidental contact with food or drinking water. To assure accuracy an individually serial-numbered Traceable certificate is provided from our ISO 17025 calibration laboratory accredited by A2LA. It indicates traceability to standards provided by NIST (National Institute of Standards and Technology). High-impact, chemical-resistant ABS plastic case. Measures 2.75" width by 4.25" height by 0.75" thick. Weight is 4 ounces. Supplied with Traceable Certificate, flip-open stand for lab bench, slot for wall mounting, and Velcro and magnetic strips to attach bottle unit to any surface.