Robust and compact battery-powered multi-channel data logger

Recommended for research in aquatic biology and hydrology

The app guides you through the entire pH calibration process

Measures and transmits temperature and relative humidity data wirelessly to mobile devices or Windows computers via Bluetooth technology

but can also be purchased separately if needed

HOBO Pendant MX2202 Temperatur/Ljus Robust and compact battery-powered multi-channelA robust waterproof temperature light data logger with bluetooth reading. Well calibrated to be able to deliver accurate temperature and light measurements directly to the mobile phone or PC via the HOBOconnect app. High durability enables long term use in water depths down to 30 meters. It also has the ability to detect and record the presence of water, which is very useful for monitoring places where water occurs periodically Documentation