Features: <br> <br>Made of high quality ABS material, it is durable, corrosion resistant and wear resistant. <br>With large-screen LCD display, it can visually display the illuminance measurement value and measure accurately. <br>The measurement range is 0.1~200,000Lx, 0.01~20,000Fc, the measurement accuracy is ±4%, and the measurement is more convenient. <br>With a lock screen function (Hold) for maximum/minimum measurement. <br>Support auto range, can switch range manually, 15 minutes no operation will automatically shut down function. <br>The meter will automatically detect the battery level. When the low battery symbol is displayed, please replace the battery in time. <br> <br>Specification: <br>Condition: 100% Brand New <br>Material: ABS <br>Measuring Range: 0.1~200,000 Lx, 0.01~20,000Fc <br>Resolution: 0.1Lx / 0.01Fc <br>Measurement Accuracy: ±4% <br>Sampling Frequency: 2 Times / Sec <br>Unit: Lx, Fc <br>Working Environment: 14 To 122°F (-10 To 50°C), 10%~90%RH <br>Storage Environment: 14 To 131°F (-10 To 55°C), 10% To 95% RH <br>Battery: 1 x 9V Battery (Battery Not Included) <br>Weight: Approx. 130g / 4.6oz <br>Size: Approx. 145x67x32mm / 5.7x2.6x1.3in <br> <br>Package List: <br>1 x Light Meter (Battery Not Included) <br>1 x Instruction Manual <br> <br>Appearance description: <br>1. MAX/MIN maximum/minimum measurement identification <br>2. Measurement reading display <br>3. AUTO automatically switches the range indicator <br>4. Meter power button / power off button <br>5. Mode switch button, short press the switch unit, long press to switch the normal / maximum / minimum mode <br>6. Illumination sensor components <br>7. HOLD lock screen logo <br>8. Battery low voltage identification <br>9. Illuminance unit, Lux: Lux, Fc: foot candle <br>10. The multiple of the reading is multiplied by the value X. This multiple is the reading. <br>11. Display the current range <br>12. HOLD button, short press the lock screen, long press to switch between auto range and manual range <br> <br>Measurement steps: <br>1. Remove the protective cover according to the direction mark. <br>2. Press the key to boot. <br>3. Short press the MODE button to select the desired unit Lux/FC, long press the MODE button to select the desired mode, divided into: current measurement / maximum measurement / minimum measurement, short press HOLD button to lock the screen. <br>4. The meter automatically measures by default. If you need to manually switch the range, press and hold the HOLD button to cycle through the range. <br>5. Take the meter to the top of the optical sphere and face the light source to get the reading. <br>6. Press the key to shut down and cover the protective cover. <br> <br>Button function introduction: <br>Switch button: switch function. <br>MODE button: Short press to switch the measurement unit Lux / Fc. Long press to switch the measurement mode, divided into current mode / MAX maximum measurement / MIN minimum measurement. <br>HOLD button: Short press for lock screen function, long press cycle to switch range, jump back to automatic mode after loop: 200 --> 2000 --> 20000 --> 200000. <br>Automatic shutdown function: <br>The instrument has an automatic shutdown function, the button does not operate within 15 minutes, the meter will automatically cut off the power to save battery loss. <br>Maintenance: <br>When the instrument is not in use, it should be stored in a dry/cloudy dry environment. If it is not used for a long time, please remove the battery to prevent the battery from leaking and damaging the instrument. <br>Battery replacement: <br>When the meter screen displays the battery low voltage indication, it indicates that the battery is nearly exhausted and you need to replace it with a new one: <br>1. Remove the battery cover on the back of the meter. <br>2. Replace