strong>400YB Includes Only:ThermometerProtective rubber bootProtective casePocket clipBatteryFeatures:Field CalibratableData Hold FunctionAuto Switch-OffLow Battery IndicatorBioCote Antimicrobial ProtectionRubber Boot to protect when dropped.NSF ListedTemperature Measurement Range -58°F to 400°F / -50°C to 200°CAccurate to ±2°F / ±1°C -4°F to +176°F / -20°C to 80°C1.5mm Thin Tip ProbeWater ResistantThe 400YB Digital Temperature Probe with Boot is also easy-to-read, thanks to a large digit LCD display making it perfect, easy-to-use thermometer for quick food checks in a busy kitchen.The Digital Temperature Probe features a handy 'Data Hold' function which enables you to hold the digital reading on the screen while you make note of the measurement.The 400YB Digital Temperature Probe is field calibratable, and the temperature scales are also switchable between Fahrenheit and Centigrade measurement.The 400YB is also water-resistant, perfect for kitchen environments and will auto switch off to conserve battery life.The 400YB Digital Temperature Probe is a basic reduced (thin) tip thermometer with a 5" (127mm) long stem and a 0.6" (1.5mm) diameter thin tip, making it suitable for probing thinner foods.This Pocket Digital Thermometer includes a protective case with pocket clip and a battery.Field CalibrationThe 400YB should only be calibrated in a slush ice solution (60% crushed ice and 40% tap water) or a water bath. We do not recommend calibrating via any other methodImmerse the stem of the temperature probe into the slush ice solution, to at least half its lengthWait for a few seconds for the reading to stabilize (usually ±2° of 32°F or ±1° of 0°C)Press and hold the 'CAL' button for 8 seconds to commence calibrationThe word 'CAL' will be displayed on the LCD for a couple of seconds to mark that the calibration to 0°C / 32°F is completedRemove the thermometer from the slush ice solution and continue to take measurementsNote: 'CAL' will display if the 'CAL/D-H' button is pressed for 8 seconds, however the temperature probe will not be re-calibrated unless the tip is inserted into a slush ice solution.Switching ScalesThe 400YB Digital Temperature Probe with Boot can be switched between the Fahrenheit and Celsius temperature scales.To switch the scale, ensure that the thermometer is first turned off, then press and hold the ON/OFF button until the desired scale is shown on the display, then release.Note: This is the same procedure for any Comark Pocket Digital Thermometer that does not have a dedicated scale switch button.