Water

Onset HOBO data loggers set the standard for reliable, accurate data logging for water monitoring applications.

Get data you can count on, from data loggers you can trust, with Onset's HOBO water monitoring solutions that are...

Highly accurate
Easily deployed
Durable
Affordable

Water is our most precious – and most at-risk – resource, so it’s more important than ever to assess and monitor impacts from climate change, urban development, and agriculture. Whether you need to track water temperature in a stream, or groundwater levels or salinity in an estuary, HOBO products offer cost-effective solutions for a wide range of water parameters and applications.

Showing 1 to 20 of 158 products

Onset HOBO UTBI-001 TidbiT v2 Water Temperature Data Logger
Model: UTBI-001

Regular Price	$185.00 USD
Availability	10 to 11 Weeks11 to 12 Weeks

Learn More

Regular Price	$185.00 USD
Availability	10 to 11 Weeks11 to 12 Weeks
Quantity

Learn More

Onset HOBO UA-PARTSKIT Pendant Replacement Parts Kit
Model: UA-PARTSKIT

Regular Price	$25.00 USD
Availability	7 to 8 Weeks

Qty:

Regular Price	$25.00 USD
Availability	7 to 8 Weeks
Quantity

Onset HOBO UA-004-64 Pendant G Data Logger, 64 KB
Model: UA-004-64

Regular Price	$115.00 USD
Availability	1 Week

Qty:

Regular Price	$115.00 USD
Availability	1 Week
Quantity

Onset HOBO UA-003-64 Pendant Event Data Logger, 64 KB
Model: UA-003-64

Regular Price	$130.00 USD
Availability	8 to 9 Weeks

Qty:

Regular Price	$130.00 USD
Availability	8 to 9 Weeks
Quantity

Onset HOBO UA-002-64 Pendant Temperature/Light Data Logger, 64 KB
Model: UA-002-64

Regular Price	$105.00 USD
Availability	6 to 7 Weeks

Qty:

Regular Price	$105.00 USD
Availability	6 to 7 Weeks
Quantity

Onset HOBO UA-001-64 Pendant Temperature Data Logger, 64 KB
Model: UA-001-64

Regular Price	$85.00 USD
Availability	6 to 7 Weeks

Qty:

Regular Price	$85.00 USD
Availability	6 to 7 Weeks
Quantity

Onset HOBO U26-RDOB-1 Replacement DO Sensor Cap
Model: U26-RDOB-1

Regular Price	$146.00 USD
Availability	8 to 9 Weeks

Qty:

Regular Price	$146.00 USD
Availability	8 to 9 Weeks
Quantity

Onset HOBO U26-GUARD-2 Antifouling Protective Guard
Model: U26-GUARD-2

Regular Price	$121.00 USD
Availability	2 to 3 Weeks

Qty:

Regular Price	$121.00 USD
Availability	2 to 3 Weeks
Quantity

Onset HOBO U26-CAL-SOL Sodium Sulfite Solution, 500 mL
Model: U26-CAL-SOL

Regular Price	$46.00 USD
Availability	4 to 5 Weeks

Qty:

Regular Price	$46.00 USD
Availability	4 to 5 Weeks
Quantity

Onset HOBO U26-001 Dissolved Oxygen Data Logger
Model: U26-001

Your Price	$1395.00 USD
Availability	5 to 6 Weeks

Learn More

Your Price	$1395.00 USD
Availability	5 to 6 Weeks
Quantity

Learn More

Onset HOBO U24-002-C Salt Water Conductivity/Salinity Data Logger
Model: U24-002-C

Regular Price	$985.00 USD
Availability	9 to 10 Weeks

Learn More

Regular Price	$985.00 USD
Availability	9 to 10 Weeks
Quantity

Learn More

Onset HOBO U24-001 Fresh Water Conductivity Data Logger
Model: U24-001

Regular Price	$985.00 USD
Availability	7 to 8 Weeks

Learn More

Regular Price	$985.00 USD
Availability	7 to 8 Weeks
Quantity

Learn More

Onset HOBO U22-U24-CAP Communications Window Cap, 5-pack
Model: U22-U24-CAP

Regular Price	$26.00 USD
Availability	2 to 3 Weeks

Qty:

Regular Price	$26.00 USD
Availability	2 to 3 Weeks
Quantity

Onset HOBO U22-001 Pro v2 Water Temperature Data Logger
Model: U22-001

Regular Price	$175.00 USD
Availability	5 Days12 in Stock

Learn More

Regular Price	$175.00 USD
Availability	5 Days12 in Stock
Quantity

Learn More

Onset HOBO U20L-04 Water Level Data Logger, 13'
Model: U20L-04

Regular Price	$375.00 USD
Availability	9 to 10 Weeks

Learn More

Regular Price	$375.00 USD
Availability	9 to 10 Weeks
Quantity

Learn More

Onset HOBO U20L-02 Water Level Data Logger, 100'
Model: U20L-02

Regular Price	$375.00 USD
Availability	2 to 3 Weeks

Learn More

Regular Price	$375.00 USD
Availability	2 to 3 Weeks
Quantity

Learn More

Onset HOBO U20L-01 Water Level Data Logger, 30'
Model: U20L-01

Regular Price	$375.00 USD
Availability	8 to 9 Weeks

Learn More

Regular Price	$375.00 USD
Availability	8 to 9 Weeks
Quantity

Learn More

Onset HOBO U20-CASE-1 Carrying Case for Water Level Data Logger
Model: U20-CASE-1

Regular Price	$60.00 USD
Availability	2 to 3 Weeks

Qty:

Regular Price	$60.00 USD
Availability	2 to 3 Weeks
Quantity

Onset HOBO U20-001-04-Ti Water Level Data Logger, 13 ', titanium
Model: U20-001-04-Ti

Regular Price	$739.00 USD
Availability	1 to 2 Weeks

Qty:

Regular Price	$739.00 USD
Availability	1 to 2 Weeks
Quantity

Onset HOBO U20-001-04 Water Level Data Logger, 13', stainless steel
Model: U20-001-04

Regular Price	$599.00 USD
Availability	3 to 4 Weeks

Learn More

Regular Price	$599.00 USD
Availability	3 to 4 Weeks
Quantity

Learn More

Showing 1 to 20 of 158 products

4.8/5 Stars

4.8/5 Stars

Water

Onset HOBO UTBI-001 TidbiT v2 Water Temperature Data Logger
Model: UTBI-001

Onset HOBO UA-PARTSKIT Pendant Replacement Parts Kit
Model: UA-PARTSKIT

Qty:

Onset HOBO UA-004-64 Pendant G Data Logger, 64 KB
Model: UA-004-64

Qty:

Onset HOBO UA-003-64 Pendant Event Data Logger, 64 KB
Model: UA-003-64

Qty:

Onset HOBO UA-002-64 Pendant Temperature/Light Data Logger, 64 KB
Model: UA-002-64

Qty:

Onset HOBO UA-001-64 Pendant Temperature Data Logger, 64 KB
Model: UA-001-64

Qty:

Onset HOBO U26-RDOB-1 Replacement DO Sensor Cap
Model: U26-RDOB-1

Qty:

Onset HOBO U26-GUARD-2 Antifouling Protective Guard
Model: U26-GUARD-2

Qty:

Onset HOBO U26-CAL-SOL Sodium Sulfite Solution, 500 mL
Model: U26-CAL-SOL

Qty:

Onset HOBO U26-001 Dissolved Oxygen Data Logger
Model: U26-001

Onset HOBO U24-002-C Salt Water Conductivity/Salinity Data Logger
Model: U24-002-C

Onset HOBO U24-001 Fresh Water Conductivity Data Logger
Model: U24-001

Onset HOBO U22-U24-CAP Communications Window Cap, 5-pack
Model: U22-U24-CAP

Qty:

Onset HOBO U22-001 Pro v2 Water Temperature Data Logger
Model: U22-001

Onset HOBO U20L-04 Water Level Data Logger, 13'
Model: U20L-04

Onset HOBO U20L-02 Water Level Data Logger, 100'
Model: U20L-02

Onset HOBO U20L-01 Water Level Data Logger, 30'
Model: U20L-01

Onset HOBO U20-CASE-1 Carrying Case for Water Level Data Logger
Model: U20-CASE-1

Qty:

Onset HOBO U20-001-04-Ti Water Level Data Logger, 13 ', titanium
Model: U20-001-04-Ti

Qty:

Onset HOBO U20-001-04 Water Level Data Logger, 13', stainless steel
Model: U20-001-04

4.8/5 Stars

4.8/5 Stars

Water

Onset HOBO UTBI-001 TidbiT v2 Water Temperature Data Logger Model: UTBI-001

Onset HOBO UA-PARTSKIT Pendant Replacement Parts Kit Model: UA-PARTSKIT

Qty:

Onset HOBO UA-004-64 Pendant G Data Logger, 64 KB Model: UA-004-64

Qty:

Onset HOBO UA-003-64 Pendant Event Data Logger, 64 KB Model: UA-003-64

Qty:

Onset HOBO UA-002-64 Pendant Temperature/Light Data Logger, 64 KB Model: UA-002-64

Qty:

Onset HOBO UA-001-64 Pendant Temperature Data Logger, 64 KB Model: UA-001-64

Qty:

Onset HOBO U26-RDOB-1 Replacement DO Sensor Cap Model: U26-RDOB-1

Qty:

Onset HOBO U26-GUARD-2 Antifouling Protective Guard Model: U26-GUARD-2

Qty:

Onset HOBO U26-CAL-SOL Sodium Sulfite Solution, 500 mL Model: U26-CAL-SOL

Qty:

Onset HOBO U26-001 Dissolved Oxygen Data Logger Model: U26-001

Onset HOBO U24-002-C Salt Water Conductivity/Salinity Data Logger Model: U24-002-C

Onset HOBO U24-001 Fresh Water Conductivity Data Logger Model: U24-001

Onset HOBO U22-U24-CAP Communications Window Cap, 5-pack Model: U22-U24-CAP

Qty:

Onset HOBO U22-001 Pro v2 Water Temperature Data Logger Model: U22-001

Onset HOBO U20L-04 Water Level Data Logger, 13' Model: U20L-04

Onset HOBO U20L-02 Water Level Data Logger, 100' Model: U20L-02

Onset HOBO U20L-01 Water Level Data Logger, 30' Model: U20L-01

Onset HOBO U20-CASE-1 Carrying Case for Water Level Data Logger Model: U20-CASE-1

Qty:

Onset HOBO U20-001-04-Ti Water Level Data Logger, 13 ', titanium Model: U20-001-04-Ti

Qty:

Onset HOBO U20-001-04 Water Level Data Logger, 13', stainless steel Model: U20-001-04

Onset HOBO UTBI-001 TidbiT v2 Water Temperature Data Logger
Model: UTBI-001

Onset HOBO UA-PARTSKIT Pendant Replacement Parts Kit
Model: UA-PARTSKIT

Onset HOBO UA-004-64 Pendant G Data Logger, 64 KB
Model: UA-004-64

Onset HOBO UA-003-64 Pendant Event Data Logger, 64 KB
Model: UA-003-64

Onset HOBO UA-002-64 Pendant Temperature/Light Data Logger, 64 KB
Model: UA-002-64

Onset HOBO UA-001-64 Pendant Temperature Data Logger, 64 KB
Model: UA-001-64

Onset HOBO U26-RDOB-1 Replacement DO Sensor Cap
Model: U26-RDOB-1

Onset HOBO U26-GUARD-2 Antifouling Protective Guard
Model: U26-GUARD-2

Onset HOBO U26-CAL-SOL Sodium Sulfite Solution, 500 mL
Model: U26-CAL-SOL

Onset HOBO U26-001 Dissolved Oxygen Data Logger
Model: U26-001

Onset HOBO U24-002-C Salt Water Conductivity/Salinity Data Logger
Model: U24-002-C

Onset HOBO U24-001 Fresh Water Conductivity Data Logger
Model: U24-001

Onset HOBO U22-U24-CAP Communications Window Cap, 5-pack
Model: U22-U24-CAP

Onset HOBO U22-001 Pro v2 Water Temperature Data Logger
Model: U22-001

Onset HOBO U20L-04 Water Level Data Logger, 13'
Model: U20L-04

Onset HOBO U20L-02 Water Level Data Logger, 100'
Model: U20L-02

Onset HOBO U20L-01 Water Level Data Logger, 30'
Model: U20L-01

Onset HOBO U20-CASE-1 Carrying Case for Water Level Data Logger
Model: U20-CASE-1

Onset HOBO U20-001-04-Ti Water Level Data Logger, 13 ', titanium
Model: U20-001-04-Ti

Onset HOBO U20-001-04 Water Level Data Logger, 13', stainless steel
Model: U20-001-04