TPI 381 Infrared Thermometer measure Hard-to-reach, sensitive, or large moving target areas. Use the 380, 381, and 383 to measure surface temperature and watch the LCD immediately display accurate data without the use of a probe. Easy to use single button operation, 0.1 resolution for best reading(380/381) Last reading hold, Soft holster pouch included, 8:1 distance to spot ratio,Large, easy to read display, degrees C and degrees F selectable, 9V battery included, Temperature range: 380/381: -4 degrees F to 572 degrees F(-20 degrees C to 300 degrees C).