Fast and accurate testing: Accurate data could be read only 10 seconds. Auto power off: After idle for 45 minutes, the thermometers will switch off Automatically. Pen type protecting bush: It could hold the probe to avoid hurt people, linked the thermometer head to lengthen the handle; as the handle when put the probe pass through the hole of the bush. Portable design: The thermometer has buckle behind the body, the thermometer can be buckled in the pocket or collar. Specification Key Operation No/Off, MAX/MIN, °C/°F, HOLD Temperature Range -58°F ~ 572°F (-50°C ~ 300°C) Temperature Resolution 0.1°C/0.1°F Power Supply LR44 Battery Stainless steel probe 304# φ3.5x120mm Unit Size 208x17x20mm Operation Method 1. Open the battery cover, take off the insulating strip and put the cover again. 2. Press button ON/OFF to start temperature measurement. 3. Push °C/°F to switch between °C and °F. 4. Press HOLD button to lock monitored temperature value. 5. Push the MAN/MIN button, the maximum and minimum value will be saved and displayed respectively. Pressing the key for 3 seconds, the saved value will be cleared. 6. Pushing ON/OFF button, will turn the power off. colour: black Material:ABS+304 stainless steel Package Contents: 4 x Food thermometer