Milwaukee 2269-20NST Information The Milwaukee 2269-20NST is a high-performance infrared thermometer that is designed for a variety of applications, including electrical, HVAC, and construction. It features a 30:1 distance-to-spot ratio, which allows you to measure temperatures from a distance of up to 30 feet. The thermometer also has a contact measurement mode, which allows you to get accurate readings of surfaces that are too hot to touch. Here is an overview of the Milwaukee 2269-20NST: Infrared temperature range: -40°F to 1472°F (-40°C to 800°C) Contact temperature range: -40°F to 1022°F (-40°C to 550°C) Distance-to-spot ratio: 30:1 Resolution: 0.1°F/0.1°C Response time: 500 ms Accuracy: ±2.0°F (±1.1°C) Emissivity: Adjustable from 0.1 to 0.99 Features: Laser sight, audible/visual alarm, hold, max, min, avg, and diff modes, 1/4-20 thread for mounting, NIST certified What's in the box: 2269-20NST thermometer, manual, 9V battery, NIST certification, K-type thermocouple S