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

A miniature, waterproof one-channel temperature data logger, this model is value-priced for short-term shipping applications or long-term deployment.

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

A Conductivity/Temperature/Depth sensor for use with HOBO MX800 Series Water Loggers with sensor options available for 13, 30, 100 or 250 feet in a wide range of underwater environments; for use in freshwater or saltwater.

Hobo Protective housing for conductivity and water level data loggers (U24-& U20-)

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

HOBOware Pro is easy to set up and its intuitive, point-and-click interface makes it simple to run.

Offload data from any HOBO® data logger with this HOBO Optic USB Base Station

Hobo Protective Case for Water Temperature Pro v2 Data Logger U22-001

Replacement DO Sensor Cap for U26-001. The DO sensor caps have a planned 6-month deployment life so make sure to stock up.

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

The HOBO Waterproof Shuttle U-DTW-1 operates in indoor, outdoor and water 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.

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

For monitoring water conductivity/salinity, temperature, level and more, the HOBO MX800 series of Bluetooth loggers offer a highly configurable solution.

Hobo Anti-biofouling Copper Guard for Dissolved Oxygen Data Logger U26-001

A battery-powered rainfall data collection and recording system that includes a HOBO Pendant Event data logger integrated into a tipping-bucket rain gauge.

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

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

A protective enclosure for Onset's HOBO MX801 data logger.

Provides the connection between the HOBO MX802 logger and a sensor.

Hobo Sodium Sulfite Solution for Disolved Oxygen Data Logger U26-001

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

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.