Compatible with Type K thermocouples, OS499 Series offers measurement range up to 1,400°F with distance to spot ratio up to 30:1. Non-contact temperature measuring devices feature dual lasers for optimized targeting, built-in flashlight, mini thermocouple socket up to 2,552°F, and large LCD with power backlight that enables night and low light viewing. Powered by two AAA batteries, thermometers use color bar to display temperature in Max/Min mode.