420E Digital Infrared Thermometer Handheld High Accuracy Thermometer Non Contact Temperature Measurement Tool Item Type: Infrared Thermometer Model: 420E Material: ABS Battery: 2 x 1.5V AAA (Battery Not Included) Application: It is a commonly used temperature measuring tool in electric power, chemical, coal, boiler, pharmaceutical and other industries Temperature Range: -50~420℃ (-58~788℉) Accurate Value: -50℃~0℃ (-58℉~32℉): ±3℃ (±5℉) 0℃~380℃ (32℉~716℉): ±1.5℃ (±2.7℉) or±1.5℃ 380℃~420℃ (716℉~788℉): ±2℃ (±3.6℉) or±2.0% Resolution: 0.1℃ or 0.1℉ Repeatability: 1% of reading or 1℃ Response Time: 500m per second, 95% preset Photovoltaic Response: 8~14um Emissivity: 0.10~1.00 (0.95 adjustable) Object Distance Ratio: 12:1 Working Temperature: 0~40℃ Working Humidity: 10~95%RH non condensing 30℃ (86℉) Storage Temperature: -20~60℃ (-4~140℉)