Water Quality Management
Track pH, conductivity, dissolved oxygen, and more!
For more than 25 years, Onset’s HOBO data loggers have set the standard for reliable, and accurate water quality monitoring.
- Quick and simple deployment
- Rugged design for harsh environments
- Easy setup and analysis with HOBO software
- Models available for easy, wireless data offload with a mobile device
Monitoring Wetlands with Data Loggers: PDF Download
Choosing A Conductivity Data Logger: PDF Download
Deep Ocean Temp Data Logger - U12-015-03
R18,110.67
The HOBO U12 Deep Ocean Water Temperature Data Logger is a single-channel water temperature logger with 12-bit resolution that can record up to 43,000 measurements. With its robust titanium housing, t..
Depth Stainless Steel Temp Data Logger 1,400m - U12-015
R5,802.67
The HOBO U12 Stainless Temperature Data Logger is ideal for food, pharmaceutical, autoclave, and other applications where high-accuracy temperature data is critical. With its broad temperature range (..
Dissolved Oxygen Data Logger - U26-001
R28,333.33
Measure oxygen concentrations in lakes, streams, rivers, estuaries, and coastal waters with the HOBO U26 Dissolved Oxygen Data Logger. This affordable and precise data logger is recommended for aquati..
Fresh Water Conductivity/Salinity Data Logger - U24-001
R17,000.00
This high-accuracy conductivity/salinity data logger is a cost-effective way to collect water quality data. The HOBO U24 measures and records both conductivity and temperatures in streams, lakes, and ..
Fresh Water Depth Level Data Logger 76m - U20-001-03
R11,220.00
The HOBO water level data logger features high accuracy at a great price and ease-of-use, with no cumbersome vent tubes or desiccants to maintain. This data logger is ideal for recording water levels ..
Fresh Water Depth Level Data Logger 9m - U20-001-01
R11,220.00
The HOBO Water Level data logger features high accuracy at a great price and ease-of-use, with no cumbersome vent tubes or desiccants to maintain. This data logger is ideal for recording water levels ..
Fresh Water Level Data Logger 3m - U20-001-04
R11,220.00
Monitor water levels and temperatures in wells, streams, lakes and wetlands (freshwater) with this 13-foot HOBO Water Level Data Logger. With its narrow range, this logger provides the best accuracy i..
HOBO Waterproof Shuttle - U-DTW-1
R4,980.00
The HOBO Waterproof Shuttle provides convenient readout and relaunching of underwater and outdoor HOBO data loggers with an Optic USB interface, and is waterproof to 20m (66ft). The HOBO Waterproof Sh..
MicroRX HOBO Outdoor Station - RX2100
The compact and rugged HOBO MicroRX Station is an easy-to-deploy, low-cost cellular solution for long-term, reliable field monitoring. Two power source options are available: a solar panel for extende..
MicroRX HOBO Water Level Station - RX2100-WL
The HOBO MicroRX Water Level Station is a cellular, web-enabled water level monitoring solution for stormwater, floodwater, irrigation, hydrologic, and environmental applications. Pre-programmed water..
MX2201 - Water Temperature Data Logger
R1,152.00
The HOBO MX2201 waterproof temperature logger leverages the power of Bluetooth Low Energy (BLE) to deliver accurate temperature measurements straight to your iOS or Android mobile device with the HOBO..
MX2202 - Temperature & Light Level Data Logger (30m depth)
R1,472.00
The HOBO MX2202 waterproof temperature and light level logger leverages the power of Bluetooth Low Energy (BLE) to deliver accurate temperature and light-level measurements straight to your iOS or And..
MX2203 - TidbiT Water Temperature Data Logger (120m depth)
R2,752.00
The HOBO MX2203 TidbiT waterproof temperature logger leverages the power of Bluetooth Low Energy (BLE) to deliver high-accuracy temperature measurements straight to your iOS or Android mobile device u..
MX2501 - Bluetooth Temperature & pH Data Logger
R15,753.33
The HOBO MX2501 pH and Temperature Data Logger is designed for long-term monitoring of pH in estuaries, lakes, streams, rivers, and oceans. Leveraging Bluetooth Low Energy® (BLE) technology, the MX250..
Salt Water Conductivity/Salinity Data Logger - U24-002-C
R17,000.00
The HOBO U24-002-C is a cost-effective data logger for measuring salinity, conductivity and temperature in saltwater environments with relatively small changes in salinity (±5,000 μS/cm) such as saltw..
TidbiT (150m depth) Temperature Data Logger - MX2204
R2,965.33
The HOBO MX2204 TidbiT waterproof temperature logger leverages the power of Bluetooth Low Energy (BLE) to deliver high-accuracy temperature measurements straight to your iOS or Android mobile device. ..