Feature:1. Professional: Using micro controller processing technology and high accuracy illuminance sensor to make measurement faster and more accurate.2. Free Switching: The illuminance value can be switched between Lx and FC units by pressing the button, and four gears can also be switched by pressing the button.3. High Performance: It has the functions of maximum value, minimum value measurement mode, REL relative value measurement mode and HOLD mode.4. Multi Function: It also has automatic shutdown function, backlight function, low battery prompt function, to provide convenience for your use.5. High Quality Material: The body uses high quality ABS material, which is environmentally friendly and wear resistant, and has a long service life.Specification:Item Type: IlluminationMaterial: ABSModel: DT-73LBattery: 3 x AAA 1.5V (Not Included)Purpose: Illumination MeasurementIlluminance Measurement Range: 0-200KLx/0 ~20KFCIlluminance Measurement Resolution: 0.1Lx/0.01FCIlluminance Measurement Accuracy: 4%rdg10dgt(<10,000Lx)8% rdg 10dgt (10,000Lx)Display: 4 Digit LCD Display with Back LightLow Battery Power Prompt: When the Low Battery Sign (Battery) Appears, It Prompts That the Battery Needs to Be ReplacedOperating Environment: 0-50C/32-122F <80%RH Non CondensingStorage Environment: -10-60C/-14-140F 99%rh Non CondensingAutomatic Shutdown: When the Automatic Shutdown Function is Turned On, It Will Automatically Shut Down After 10 Minutes of InactivityRelative Value: Minimum, maximum Value: Data Retention: Automatically Switch Gears, units: Back Light: .Package List:1 x Illuminometer1 x ManualNote:1. It is forbidden to operate the instrument in an environment with the following objects or gases: explosive gas (or material), combustible gas (or material), steam or dust.2. It is forbidden to touch the meter circuit board for any reason to avoid damage to sensitive components due to static electricity or pollution.