Maverick Pro-Temp Commercial Thermometer is a commercial grade thermometer with NSF approval; Type K Thermocouple with integral stainless precision micro tip probe; Water & Dust resistant to IP44; Shock resistant against multiple 3 foot drops onto concrete floor; High Contrast LCD with Big 0.5" Backlit Blue-White Digits on Black Display; Temperature range: -40 F (-40 C) to 450 F (230 C); 100% Factory Calibration Certificate included guarantees performance & accuracy to NIST standards; Dimensions closed: 7.4" x 2.2" x 0.7"; Probe length: 5"; Auto Power Save after 5 minutes of inactivity; Unit turns ON/OFF automatically when the probe is pivoted; LCD Resolution is: 0.1C/0.1F; Low battery indicator; Selectable Fahrenheit or Celsius; Handy Cooking Chart on body; Uses 3 AAA batteries (included).