💡Large Range with High Accuracy - This illuminance meter has a large measuring range of 0.1-400,000 lux (40,000 FC), high accuracy of ±4% ± 1% f.s. Both weak and strong light can be detected acutely and quickly. | 💡Quick-response 270º Rotatable Detector - 0.4 seconds is all it takes for an accurate reading. An advanced built-in calibration sensor measures the light levels at a super fast, 3~4 per second speed. The optical detector rotates a full 270 degree for muti-directional detection, which ensures precise light measurements from multiple angles. | 💡2.3" Large Color Display - Our device is designed for professional use, with a high-resolution color LCD display for clear visibility even in low-light. Ideal for photography, plant growing, Car Headlights, set design, factory, office or home use. | 💡Multifunctional Measurement - This digital lux meter has 2 units of switching (lux &FC), MAX/MIN mode, ambient ℃/℉ temperature, backlight, low battery reminder, auto off, data hold and data storage functions, helps you to measure the light more conveniently. Please note that this is not a professional photography light meter. After obtaining the basic lux readings, you will need to perform some calculations to determine your shutter speed and aperture. | 💡Wide Applications - The Holdpeak lux meter can measure a variety of visible light sources and is ideal for detecting illuminance in homes, schools, offices, workshops, stages, farms, and factories. For example, use our light meter to detect uneven illumination from car headlights or LED bulbs in your home to ensure consistent brightness.