Professional Digital Lux Meter - High Accuracy Light Intensity & Illuminance Tester (0-50,000 Lux Range) - Perfect for Photography, Indoor Farming, and Workplace Lighting Measurement

The lux (symbol: lx) is the SI derived unit of illuminance and luminous emittance, measuring luminous flux per unit area. It is equal to one lumen per square metre. In photometry, this is used as a measure of the intensity, as perceived by the human eye, of light that hits or passes through a surface.