THERMOMETER Features: Dual laser for accurate targeting with fast (0.15s) response time At 12" (30.5cm) distance two laser points converge to 1" target spot Temperature range: -58 to 1100°F (-50 to 600°C) 0.10 to 1.00 adjustable emissivity increases measurement accuracy for different surface 0.1°F/°C max resolution The Extech 42511 InfraRed Thermometer is one of the fastest and easiest-to-use IR thermometers. With dual lasers, the distance-to-target ratio is simplified so there are no more calculations. It features a 12" laser convergence distance, an exclusive 150 millisecond instantaneous response for capturing spikes in temperature, and an adjustable emissivity for increased measurement accuracy on different surfaces. A white backlit, dual LCD display shows the clear and easy readings in any lighting condition. It also includes an adjustable alarm which visually and audibly alerts the user when the temperature exceeds the programmed limits. The rugged, double-molded housing is great for field use and the unit can be stored in the supplied carrying case. Includes: Extech 42511 Dual Laser InfraRed Thermometer 9V battery Carrying Case Specifications: aser Convergence Distance: 12" (30.5cm). Range: -58 to 1100°F (-50 to 600°C). Repeatability: ±0.5% or 1.8°F/1°C. Basic Accuracy: ±(1% of rdg + 2°F/1°C). Max resolution: 0.1°F/°C. Emissivity: 0.10 to 1.00 Adjustable. Field of View (Distance to Target): 12:1. Dimensions: 5.7x4x1.6" (146x104x43mm).  Weight: 5.7oz (163g).