PRO DIGITAL PYROMETER GAUGE - Built with non-slip rubber handle, super handy for non-contact high temperature measuring for HVAC industrial, mechanical, smelting. Such as: metal melting furnace, forge bricks ceramic pottery, casting, blacksmith and weldingHANDHLED IR THERMOMETER - Features with MAX/MIN/Average/Difference mode and high/low temp warning. Flashing alarm once the current temp exceeds the set-point. Color LCD screen backlight display + flashlight can better distinguish the data at a glance and get the jobs done in dark. Repeatability:1% of reading or 1,with adjustable emissivity 0.1 to 1.0gEXTREMELY HIGH TEMP RANGE - BT-1800 Pro Laser Thermometer Gun can measures high temperature range from -58F ~3272F (-50 ~ 1800) with high accuracy 2.5% of reading at average.FURTHER DISTANCE + 2 LASERS - With distance to spot ratio 50:1, dual laser points for instant targeting, which means you can stand far from heat to measure high temperature. Instantly capture hot spot detect the internal temp of forge kiln furnace within 0.25 second only.DURABLE LASER THERMOMETER GUN - Auto Power OFF, Low power indicator to extend the battery life. BT-1800 Professional digital infrared temp meter is specially designed for inanimate objects, temperature measurement for humans or animals could cause lower readings.optical power