Professional Illumination Measurement: The WT81 Digital Handheld Luxmeter is a reliable and accurate instrument designed for measuring illumination and brightness Convenient and Portable: This luxmeter is conveniently handheld and portable, allowing you to easily carry it around for on-the-go measurements Multiple Functions for Versatile Use: Equipped with various functions, such as backlight and data holding, automatic power off, and both automatic and manual stora of data, this luxmeter offers great convenience and efficiency Wide Measurement Ran and Accurate Results: The WT81 luxmeter has a wide measurement ran from 0 to 200,000 Lux, ensuring its suitability for different lighting conditions User-Friendly Design and Reliable Performance: With its user-friendly LCD screen interface and fast update rate of 2 times per second, the WT81 luxmeter delivers a seamless experience