Temperature range: -30 degrees to 500 degrees C (-20 degrees to 932 degrees F). Instant current and max. readings. Large, easy to read display. Single dot laser sighting system. Durable and compact design Portable IR thermometers have become indispensable tools for automotive troubleshooting and diagnostics. Quick non-contact temperature measurements make it easy to spot cooling system faults, identify engine misfires, check for proper A/C performance, verify catalytic converter operation and much more. The laser point sighting on the MT6 unit helps to direct measurements toward the target, and the large backlit display shows both the current and maximum readings simultaneously. With a protective boot for added durability, award winning ergonomic design and Raytek quality and accuracy, the MT6 model is the perfect introduction to infrared temperature measurements in automotive diagnostics. Accuracy is +/-1 degree C (2 degrees F) from 10 degrees C to 30 degrees C (50 degrees F to 86 degrees F), +/- 1.5% of reading or +/- 1.5 degrees C (3 degrees F) whichever is greater over the balance of the range. Emissivity: preset at 0.95. Response time: 500msec. Distance to spot ratio: 10: 1 calculated at 80 % energy. Runs on a 9V Alkaline battery (included). Includes protective boot and storage pouch.(assumes standard and stable measurement conditions)