Designed for ecosystem research, protection and restoration, with a compact, rugged, and waterproof design rated for fresh and saltwater environments, the HOBO Bluetooth MX2502 Underwater PAR logger effectively delivers research-grade sensor performance in an easy-to-use, affordable package.

It integrates the LI-COR LI-192 quantum PAR sensor that provides the industry’s highest-accuracy underwater light measurement, plus sensors for temperature and tilt. With both water and air calibration factors, this multiparameter logger provides accurate PAR data in either environment.