HOBO* Wireless Temperature/Humidity Data Logger, measures and transmits temperature and relative humidity data to mobile devices through Bluetooth low energy technology over a 100-foot range, Memory for 84,000 measurements, Accuracy: +/- 0.2C and +/- 2%RH
HOBO* Bluetooth Low Energy Water Level Data Logger, for convenient wireless setup and download from mobile devices via Bluetooth Low Energy, consists of a top-end unit and a water level sensor which are sold as a set, plus a direct read cable, Size: 30 m