The new UX100 Series of data loggers deliver high accuracy, large measurement capacity, and LCD display features to make environmental data collection fast and easy. Use the matchbox-sized data loggers to collect data that includes temperature and relative humidity. A large memory capacity enables users to deploy the loggers for longer periods with fewer site visits. The series includes temperature-only loggers with integrated sensors to temperature/RH and thermocouple loggers with external probes. Prices range from $75 to $189. Onset.