The TA631B Digital Lux Meter is a high-precision portable light measurement instrument, also known as an illuminance meter, light meter, lux tester, light intensity meter, and illumination measuring device. Equipped with a high-sensitivity resin optical sensor and precision filtering technology, it provides fast and accurate measurement of visible light intensity for professional lighting inspection and environmental assessment. Supporting both LUX (lux) and FC (foot-candle) measurement units, the instrument features automatic range selection and multiple built-in light source correction factors, allowing accurate measurements of LED white light, red light, blue light, and various artificial lighting sources. It is ideal for lighting acceptance testing, LED product development, industrial workplace illumination control, and architectural lighting evaluation. The TA631B combines illuminance measurement with ambient temperature and humidity monitoring, providing comprehensive environmental analysis in one device. Its VA color display, analog bar graph, high/low illumination alarm, data hold, maximum/minimum/average value recording functions ensure clear readings and efficient field operation. Widely used in industrial manufacturing, electronics assembly, precision machining, warehouses, logistics centers, healthcare facilities, schools, laboratories, commercial buildings, hotels, offices, residential environments, photography studios, and lighting engineering projects, the TA631B Digital Lux Meter is designed for workplace lighting inspection, classroom illumination evaluation, medical lighting monitoring, LED lamp testing, indoor lighting analysis, and professional light quality management.