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The HOBO U20L-02 is a low-cost, research-grade water level data logger for continuously measuring water level and temperature in a wide range of underwater environments.

A low-cost, research-grade data logger with Bluetooth data offload to continuously monitor water level and temperature. Measures at depths of up to 13, 30, or 100 feet in a wide range of underwater environments, both freshwater and saltwater.

Low-cost, fully integrated soil moisture logger with convenient Bluetooth wireless data offload.

Measures 3-dimensional motion, such as sports activity or medical therapy compliance.

HOBO Water Level Data Logger MX2001 available with 6 different sensors and three different cable lengths.

Ideal data logger for underwater measurements in shallow wells, streams, lakes and freshwater swamps.

The HOBO MX2309 combines three essential measurements in one compact data logger: temperature, relative humidity, and solar radiation.

HOBO MX2205 waterproof data logger with an internal and external sensor to monitor both air temperature and fast-changing water temperature.

A weatherproof data logger with one external temperature sensor, leveraging Bluetooth for easy setup and data download.

Measure oxygen concentrations in lakes, streams, rivers, estuaries, and coastal waters with the HOBO U26 Dissolved Oxygen Data Logger.

Monitor PAR, temperature, and RH with high precision. Effortless Bluetooth data offload makes it ideal for tracking environmental conditions in agriculture, research, and other outdoor applications.

A low-cost, research-grade data logger with Bluetooth data offload to continuously monitor water level and temperature. Measures at depths of up to 13, 30, or 100 feet in a wide range of underwater environments, both freshwater and saltwater.

This locking well cap provides convenient mounting for HOBO loggers in wells.

Can be used in place of the standard protective guard for protection against fouling during deployment.

A conductivity and temperature sensor for use with HOBO MX800 Series Water Loggers

The U12 Stainless is ideal for high-temperature or deep underwater applications.

A low-cost, research-grade data logger with Bluetooth data offload to continuously monitor water level and temperature. Measures at depths of up to 13, 30, or 100 feet in a wide range of underwater environments, both freshwater and saltwater.

Potassium Chloride (KCI) conductivity standard for accurate calibration. Suitable for MX800-series conductivity and CTD sensors.

This high-accuracy conductivity data logger is a cost-effective way to collect water quality data.

The HOBO Water Level Titanium is recommended for saltwater deployment for recording water levels and temperatures in wetlands and tidal areas.

The HOBO Water Level Titanium is recommended for saltwater deployment for recording water levels and temperatures in wetlands and tidal areas.

Water-resistant temperature data logger up to 5000 Feet

Hobo protective cap for Water Datalogger series U22- & U24- , set of 5

Use the RS3-B Solar Radiation Shield with HOBO external sensors for improved temperature measurement accuracy in locations exposed to sunlight