Wintact Non-Contact Infrared Thermometer -58 to 716℉ Precision Digital Thermometer Instant Read Temperature Meter for Food Water Refrigerator HVAC Automotive Mechanics Electricians The non-contact infrared thermometer is perfect for measuring hot objects at a safer distance to monitor electrical, mechanical, HVAC, automotive systems, kitchen appliance, food, water, oil, and more. Features: Quick Measuring & Wide Range - Super fast reponse in 0.5 seconds, and able to measure at the range of -58 to 716℉(-50 to 380℃). High Accuracy - Use the 12:1 distance to spot ratio measurement method to deliver a more accurate result of object's temperature, at resolution of 0.1℉(0.1℃). Self Calibration - You can calibrate the thermometer and adjust temperature between -5℃ and 5℃. And the emissivity is adjustable between 0.95 and 0.8. Auto Off - The unit will automatically turn off if there is no operation in 20 seconds to conserve the battery. Practical Functions - ℃/℉ unit conversion, data hold, maximum/minum value, and backlight. Versatile Use - Works for measuring the temperature of refrigerator, food, oil/water, air conditioner, fish tank, mixed solution, automobile(like tire, engine, tank, etc.),  plant, and more, covering most common needs for you. Note: *Battery not included. Specifications: Material: ABS Color: Black and Red Temperature Measuring Range: -50 to 380℃(-58 to 716℉) Accuracy: 0℃ to 380℃(32 to 716℉): ±1.5℃(±2.7℉) or ±1.5% -50℃ to 0℃(-58 to 32℉): ±3℃(±5℉) Repeatability Precision: 1% of reading or 1℃ Resolution: 0.1℃ / 0.1℉ Response Time: 500 m/Sec Wavelength: 5~14μm Emissity: 0.8 or 0.95  Distance to Spot Size: 12:1 Power Supply: 1.5V AAA battery, 2pcs(NOT included)  Typical Battery Life: about 12 hours  Item Size: 16*8*4cm / 6.29*3.14*1.57in Item Weight: 109g / 3.84oz Package Size: 19.7*11*4cm / 7.75*4.33*1.57in Package Weight: 137g / 4.83oz Packing List: 1 * Thermometer 1 * User Manual(English)