Accurate Measurement: The Ultraviolet Intensity Radiation Measure Tester UVAB Light Meters SENTRY ST-513 Lux meter is specifically designed to measure ultraviolet light in the ran from 220 to 275 nanometers (UVC), 380 to 320 nanometers (UVA), and 280 to 400 nanometers (UVAB) Convenient Display: Equipped with a backlit LCD and dual display, this UVAB Light Meter provides clear and easy-to-read measurement readings Versatile Features: This UVAB Light Meter offers a ran of convenient features for added functionality. It includes a socket for tripod mounting, allowing for stable and hands-free operation Memory Function: With a capacity to store up to 20 measurement points and 1 interval time, this UVAB Light Meter enables easy reference and comparison of data Compact and Portable: Measuring just 140 x 49 x 29 cm (5.51 x 1.93 x 1.14 inch) and weighing approximately 90g, this UVAB Light Meter is compact and lightweight, making it highly portable