Pocket Digital Photometer with Electronic Lux Meter, Large Display, 200,000

1. Made of high-quality ABS material, it is durable, corrosion-resistant, and wear-resistant. 2. With a large LCD screen, it can visually display the measured illuminance value and measure accurately. 3. The measuring range is 0.1~200,000 Lx, 0.01~20,000 Fc, the measurement accuracy is ±4%, and measurement is more convenient. 4. With a screen lock (Hold) function for maximum/minimum measurement. 5. Supports automatic range selection; the range can be changed manually. 15 minutes of inactivity will automatically stop the function. Specification: Features: Made of high-quality ABS material, it is durable, corrosion-resistant, and wear-resistant. With a large LCD screen, it can visually display the measured illuminance value and measure accurately. The measurement range is 0.1 ~ 200,000 Lx, 0.01 ~ 20,000 Fc, with a measurement accuracy of ±4%, making measurement more convenient. It features a screen lock function for maximum/minimum readings. Automatic ranging is supported, and the range can be changed manually. The function will automatically stop after 15 minutes of inactivity. The meter will automatically detect the battery level. When the low battery symbol appears, please replace the battery promptly. Specification: Condition: 100% Brand New Material: ABS Measuring Range: 0.1 ~ 200,000 Lx, 0.01 ~ 20,000 Fc Resolution: 0.1Lx / 0.01Fc Measuring Accuracy: ±4% Sampling Rate: 2 times/sec Unit: Lx, Fc Working Environment: 14 to 122°F (-10 to 50°C), 10% to 90% RH Storage Environment: 14 to 131°F (-10 to 55°C), 10% to 95% RH Battery: 1 x 9V battery (battery not included) Weight: Approx. 130g / 4.6oz Size: Approx. 145x67x32mm / 5.7x2.6x1.3in Package List: 1 x Lux Meter (battery not included) 1 x Instruction Manual. Appearance Description: 1. Maximum/Minimum Measurement Identification MAX/MIN 2. Measurement Reading Display 3. AUTO Automatically Switches the Range Indicator 4. Meter Power Button/Power Off Button 5. Mode Switch Button: Short press to switch unit, long press to switch between normal/maximum/minimum mode 6. Light Sensor Components 7. HOLD Lock Screen Logo 8. Low Battery Voltage Identification 9. Light Unit: Lux: Lux, Fc: Footcandle 10. The reading is multiplied by the value X. This multiple is the reading. 11. Display the current range. 12. HOLD button: Briefly press to lock the screen, press and hold to switch between automatic and manual range. Measurement steps: 1. Remove the protective cover according to the direction markings. 2. Press the button to start. 3. Briefly press the MODE button to select the desired Lux/FC unit, press and hold the MODE button to select the desired mode (current measurement / maximum measurement / minimum measurement), then briefly press the HOLD button to lock the screen. 4. The meter measures automatically by default. If you need to manually change the range, press and hold the HOLD button to scroll through the ranges. 5. Bring the meter to the top of the optical sphere and face the light source to obtain the reading. 6. Press the button to turn off and replace the protective cover. Button function introduction: Switch button: Switching function. MODE button: Briefly press to change the measurement unit (Lux/FC). Press and hold to change the measurement mode, divided into current mode / maximum measurement MAX / minimum measurement MIN.HOLD button: Press briefly to lock the screen function, press and hold to cycle through the ranges, and return to automatic mode after the following cycles: 200 --> 2000 --> 20000 --> 200000. Auto-off function: The instrument has an auto-off function. If the button is not pressed for 15 minutes, the meter will automatically shut off the power to conserve battery. Maintenance: When not in use, store the instrument in a dry/cloudy environment. If not used for an extended period, remove the battery to prevent leakage and damage. Battery replacement: When the meter's display shows a low battery voltage indicator, the battery is nearly depleted and needs to be replaced: 1. Remove the battery cover on the back of the meter. 2. Replace the battery with a new 9V battery. 3. Replace the battery cover. Note: Do not measure in an area with high temperature/high humidity. The light detector must be kept clean during use. The reference standard for testing the light source is located on top of the receiving sphere. When not in use, please replace the protective cover to extend the instrument's lifespan. https://m.media-amazon.com/images/I/51rDSxOFflL.jpg