Traceable® Refrig./Freezer Plus™ Thermometer

Catalog No. 4227


  • Probe is sealed in glycol solution
  • Min/max memory
  • High and low settable alarms

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 minimum, maximum, 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°F and –50 to 70°C with a resolution of 0.1° and accuracy of ±0.5°C (between 0 to 50°C). Alarm feature provides alert when temperature rises above or falls below a set point. Alarm is programmable in 1° increments. Ten-foot micro-cable permits refrigerator doors to close on it.

Avoids contaminants
Solid-state probe eliminates mercury contamination in refrigerators. Probe is sealed in a miniature bottle (1 x 2-1/2 inches) filled with nontoxic glycol. Solution is GRAS (generally recognized as safe) by the FDA (Food and Drug Administration). Eliminates concerns about contact with food or drinking water. High-impact, chemical-resistant ABS plastic case is 3-1/4 x 2-1/2 x 5/8 inches. Weight is 4 ounces. Supplied: Velcro®, magnetic strips, Traceable® Certificate and AAA battery.

  • Range is –58 to 158°F (–50 to 70°C)
  • Resolution of 0.1°
  • Accuracy of ±0.5°C (between 0 to 50°C)
  • Size is 3-1/4 x 2-1/2 x 5/8 inches
  • Weight is 4 ounces 

To assure accuracy an individually serial-numbered Traceable® Certificate is provided from Control Company ISO 17025 calibration laboratory accredited by A2LA. It indicates traceability to standards provided by NIST.

For more model options, please download REFRIGERATOR/FREEZER THERMOMETERS brochure.