Feature 1Storage function, it has two recording modes: automatic storage of illuminance data (maximum 2000 groups) and manual storage (maximum 60 groups). 2Auto range, it can automatically confirm and convert the corresponding range, helping to make the measurement easier. 3Responsive, it can quickly translate the light, and can also measure lowlight environments. 4Backlit screen function, it can be easy to operate in the dark, providing more practicality. 5Small in size, it is lightweight and portable, and can be used handheld in many situations.Item Type: Luminance MeterProduct Size: Approx. 14.5x6.7x2.8cm / 5.7x2.6x1.1inMaterial: ABSBattery: 3x1.5V AAA Battery (Battery Not Included)Illuminance Measurement Range: 0-200000Lux/0-20000FcMeasurement Accuracy: 3%+5dgts/4%+10dgtsTemperature Measurement Range: -20-50C/-4-122FWeight: Approx. 745g / 26.3ozMeasurement Accuracy: 1Resolution: 0.1Lux/1Lux/0.1Repeatability: 2%Refresh Rate: 2 Times/SecIlluminance Unit/Temperature Unit: Lx/Fc C/FIlluminance Probe: Silicon PhotodiodeTemperature Probe: NTC ThermistorData Storage: automatic storage up to 2000 groups, manual storage up to 60 groups.Measurement Items: It can be used to measure the maximum measurement, minimum measurement, difference measurement, and integral illuminance measurement. .wang-edit-text{ font-family:'Arial' !important; } .wang-edit-text table { border-top: 1px solid #000; border-left: 1px solid #000; } .wang-edit-text table td, .wang-edit-text table th { border-bottom: 1px solid #000; border-right: 1px solid #000; padding: 3px 5px; } .wang-edit-text table th { text-align: center; }Package List1 x Illuminance Meter (Battery Not Included)1 x Connection Line1 x Manual1 x Storage Box