1. High-precision light transmittance measurement, with a wide range of 0%–100% and 0.1% high resolution for clear and accurate data. 2. Portable and compact design, robust structure, lightweight and easy to carry for on-site and outdoor measurement. 3. User-friendly one-button calibration, supporting single measurement and continuous measurement modes for flexible operation. 4. Clear 4-digit LCD digital display, direct and intuitive reading, effectively improving measurement efficiency. 5. Multiple data output methods, supporting USB cable connection to PC and optional Bluetooth data transmission for convenient data recording and processing., Manufacturer: ZKLGS