Traceable Monitor temperatures in freezers, refrigerators, incubators, water baths, and heating blocks with the enclosed "temperature buffered" sensor. Probe is sealed in a miniature bottle filled with nontoxic glycol solution that provides accurate readings when doors are opened. Eliminates mercury contamination. Triple readout simultaneously shows current, high, and low temperatures. Minimum/maximum display monitors conditions overnight, on/during weekends, or on/during any time period. Refrigerator/freezer thermometer 61161-364 includes an alarm, which sounds if temperature rises above or falls below set points. It is programmable in 1 degrees increments. Visual and audible alarms signal for 12 hours even if temperature returns to non-alarm range. The ten-foot micro cable permits refrigerator doors to close. High-impact, chemical-resistant case measures 7Lx10.8Hx1.9Dcm (23/4x41/4x3/4"). Submersible probe and 3m (10') cable perform accurately when both are underwater. Wire-mounting bracket permits easy probe placement. Probe sensor measures 5mm (3/16") in diameter and is 19mm (3/4") long. A serial numbered certificate is provided from an ISO 17025 calibration laboratory accredited by A2LA to indicate instrument traceability to standards provided by the National Institute of Standards and Technology. 12777-838 61161-364 Temperature Range: -40 to 50 degrees C -50 to 70 degrees C (-40 to 122 degrees F) (-58 to 158 degrees F) Resolution: 0.1 degrees 1 degrees Accuracy: +-0.5 degrees C +-1.0 degrees C Ordering Information: Supplied with AA battery, Velcro fastener strips, and magnetic strips for mounting thermometer and bottle sensor.