Digital Thermometer Backlit LCD Display Power Indicator K Type Thermocouple NCV Function Temperature Meter Item Type: Digital Thermometer Mode: DT8550HET Material: ABS Battery: 9V 6F22 x 1 (without battery) Application: Widely used in chemical and chemical equipment, machinery maintenance, substation, industrial equipment, food processing, household electricity and other fields. Basic Parameters: Measuring Range: - 50 ℃ to 550 ℃ (- 58 ℉ to 1022 ℉) Measuring Range of K Type Thermocouple: - 50 ℃ to 500 ℃ (- 58 ℉ to 932 ℉) Temperature Measurement Accuracy: ± 2% or 2 ℃ Measuring Distance Ratio: 12:1, 16:1, 50:1 Emissivity: 0.1 to 1.0 Response Time and Response Value Length: 500ms, (8 to 14) um Repeatability: ± 1% or ± 1 ℃ Resolution: 0.1 ℃ or 0.1 ℉ Storage Ambient Temperature: - 20 to 50 ℃ (- 4 to 122 ℉) Working Temperature: 0 to 50 ℃ (32 to 122 ℉) Relative Humidity: 10 to 95% RH