Laser TEMP-GUN- M12- Cordless Thermometer Kit for HVAC/R (NIST)The Laser TEMP-GUN- M12- Cordless Thermometer for HVAC/R (NIST) is a heavy duty pistol grip infrared thermometer for professional HVAC/R commercial and industrial applications. Powered by the Milwaukee M12 LITHIUM-ION battery, the 2277-21 can safely measure temperatures between -22 to 1472- F (-30 to 800- C) with a 40 to 1 distance to spot ratio for even the most demanding industrial applications. In addition, the M12 Cordless Laser TEMP-GUN- Thermometer for HVAC/R was designed with an extra bright LED flood light to increase end user productivity. A NIST Certificate of Calibration with Data is also included, needed by many organizations as proof of calibration with the date when NIST Calibration was performed. The 2277-21 is covered by the Milwaukee 5-Year Warranty.Features:Infrared Surface Temperature Measurement from -22 to 1472- F (-30 to 800-C)Contact Surface Temperature Measurement from -40 to 1022-F (-40 to 550-C)40:1 Distance to Spot Ratio. Measures a one foot spot from 40 feet away.Measure Ambient Humidity and Dew PointHigh Contrast, White on Black Display with Backlight for easy readingExtra Bright LED Floodlight increases usability in low light conditionsUser Configurable Hi/Low Alarm SettingsAdjustable emissivity from 0.10 to 1.00 for increased accuracyUnit Memory stores up to 20 temperature valuesSince its founding in 1924, Milwaukee has focused on a single vision: To produce the best heavy-duty electric power tools and accessories available to the professional user. Today, the Milwaukee name stands for the highest quality, durable and reliable professional tools money can buy.