Features 1、The measurement range is large, and the measurement accuracy is high, which can meet the needs of daily work 2、With infrared aiming function, it can easily measure the temperature at a long distance, which is more convenient and safe 3、The operation is simple and easy to use, just pull the trigger to start measuring temperature, improve work efficiency 4、Made of high quality ABS, light weight, sturdy and durable, and portable design makes it very easy to hold and use 5、Wide application range, it can be used to measure high temperature in machinery, chemical industry, food, electric power, heat treatment and other industries Specification Item Type: Thermometer Material: ABS Product Model: GM550 Power Supply: 1 x 9V 6F22(battery not included) Temperature Measurement Range: -50℃--550℃ (-58℉-1022℉) Accuracy: ± 2℃ or ± 2%℃ Distance Coefficient Ratio: 12:1 (proportion between distance and measuring point size) Emissivity: 0.1~0.99 adjustable (default value: 0.95, more accurate and convenient to test the temperature of objects of different materials) Working Environment: 10-40℃ Relative Humidity: 10-90RH non condensing Response Time: ≤0.5S Range of Application: measurement of high temperature, dangerous and inaccessible surface temperature of machinery, chemical industry, ceramics, light industry, food, metallurgy, electric power, heat treatment and other industries Package List 1 x Thermometer 1 x Manual