Features& 65306; & 9679; Suitable for LED lighting measurement & 9679;Suitable for measuring from low to high illuminance (200000 lx) from emergency lights, guide lights, etc & 9679;Equipped with a timer holding function that can be measured in remote areas, avoiding the impact of shadows and reflections & 9679; Memory can store up to 99 data, improving work efficiency by transferring it to a computer Specifications& 65306;             Photosensitive Element    Silicon Photodiode        Measurement Range Switching    Auto/Manual        Linearity    ±2% rdg. (or Display Values Exceeding 3000lx, It is 1.5 times)        Accuracy Assurance Temperature and Humidity Range    21 ° C~27 ° C, below 75% rh  (Non condensing)        Response Time    Automatic Range: within 5 seconds Manual range: within 2 seconds        D/A Output    Output Level: 2 V/range f.s. (Output 2.5 V when exceeding range f.s.) Output Accuracy: ± 1% rdg ± 5 mV (for display points)        Function    Timer hold, memory (up to 99), hold, automatic power saving, beep, backlight, zero setting        Standards    DIN 5032-7: 1985 class B        Power Supply    No.5 alkaline battery (LR6) × 2.  Maximum rated power 500mA,  Continuous use Time: 300h, or No. 5 dry battery (R6) × 2.  USB bus power supply DC 5V                   Range    Measuring Range    Display Step        20 lx    0.00 lx~20.00 lx    1 point step        200 lx    0.0 lx~200.0 lx            2000 lx    0 lx~2000 lx        20000 lx    0(0) lx~2000(0) lx    10 point step        200000 lx    0(00) lx~2000(00) lx    100 point step