Technical Specifications Measurement Range: −30°C to +500°C IR Measuring Accuracy: ±1.8°C Measuring Application: Spot Temperature Measurement Optics: 12:1 Laser: Class 2, 635 nm Power Supply: 2 × 1.5 V AA batteries Battery Runtime: Up to 9 hours Weight: 0.22 kg Operating Temperature: −5°C to +50°C Storage Temperature: −20°C to +70°C Dimensions: 171 × 101 × 54 mm Emissivity Settings: 3 levels Bosch confirms the −30°C to +500°C range, ±1.8°C IR accuracy, 12:1 optics, 2 × AA battery supply and 0.22 kg weight. Description Thermo Detector Bosch GIS 500 Professional is a compact infrared temperature measuring tool designed for quick and accurate surface temperature measurement. It measures temperatures from −30°C to +500°C with an IR accuracy of ±1.8°C and features 12:1 optics for measuring temperature from a distance. Three emissivity settings help provide more precise measurements for different materials. Its ergonomic 0.22 kg design makes it easy to carry and operate. Ideal for: Electrical inspection, HVAC maintenance, heating-system inspection, machinery maintenance, detecting overheating, building inspection, surface temperature checking and professional maintenance applications.