timing and duration

A water level gauge with built-in barometric pressure compensation is the bluetooth equivalent of the U20L: MX2001

With an MX Gateway

A four-channel thermocouple LCD display data logger for measuring and recording temperature in a wide range of monitoring applications

HOBO TidbiT MX2204 Temperatur (1500m) Data Logger timing and durationA robust waterproof temperature data logger with bluetooth reading. Well calibrated to be able to deliver accurate temperature measurements directly to the mobile phone or PC via the HOBOconnect app. High durability enables long term use in water depths down to 1500 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