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 85-ORING-15 Replacement O-ring for 85-DOMEPLUG-1
Model: 85-ORING-15

Regular Price	$4.00 USD
Availability	2 to 3 Weeks

Qty:

Regular Price	$4.00 USD
Availability	2 to 3 Weeks
Quantity

Onset HOBO 85-SEALANT Sealant for Submersible Case
Model: 85-SEALANT

Regular Price	$6.00 USD
Availability	3 to 4 Weeks

Qty:

Regular Price	$6.00 USD
Availability	3 to 4 Weeks
Quantity

Onset HOBO 85-CAPLUG-H20-B End Cap for Protective Black Boot
Model: 85-CAPLUG-H20-B

Regular Price	$7.00 USD
Availability	4 Days

Qty:

Regular Price	$7.00 USD
Availability	4 Days
Quantity

Onset HOBO HRB-LI-AAA AAA Batteries, 2-pack
Model: HRB-LI-AAA

Regular Price	$11.00 USD
Availability	2 to 3 Weeks

Qty:

Regular Price	$11.00 USD
Availability	2 to 3 Weeks
Quantity

Onset HOBO MX2201-02-ORING O-ring for the MX2201 and MX2202, 5-pack
Model: MX2201-02-ORING

Regular Price	$12.00 USD
Availability	6 to 7 Weeks

Qty:

Regular Price	$12.00 USD
Availability	6 to 7 Weeks
Quantity

Onset HOBO MX2203-ORING O-ring for the MX2203, 5-pack
Model: MX2203-ORING

Regular Price	$12.00 USD
Availability	2 to 3 Weeks

Qty:

Regular Price	$12.00 USD
Availability	2 to 3 Weeks
Quantity

Onset HOBO DESICCANT1 Small Desiccant Pack, 25-pack
Model: DESICCANT1

Regular Price	$13.00 USD
Availability	6 to 7 Weeks

Qty:

Regular Price	$13.00 USD
Availability	6 to 7 Weeks
Quantity

Onset HOBO HRB-TEMP-1 Replacement Batteries, 5-pack
Model: HRB-TEMP-1

Regular Price	$13.00 USD
Availability	1 to 2 Weeks

Qty:

Regular Price	$13.00 USD
Availability	1 to 2 Weeks
Quantity

Onset HOBO MX2200-RS-BRACKET Bracket for RS1 or M-RSA
Model: MX2200-RS-BRACKET

Regular Price	$13.00 USD
Availability	2 to 3 Weeks

Qty:

Regular Price	$13.00 USD
Availability	2 to 3 Weeks
Quantity

Onset HOBO 85-DESICCANT6 Desiccant Pack for Onset HOBO Micro Station
Model: 85-DESICCANT6

Regular Price	$14.00 USD
Availability	2 to 3 Weeks

Qty:

Regular Price	$14.00 USD
Availability	2 to 3 Weeks
Quantity

Onset HOBO COUPLER2-A Coupler for UA Pendant Data Loggers
Model: COUPLER2-A

Regular Price	$15.00 USD
Availability	2 to 3 Weeks

Qty:

Regular Price	$15.00 USD
Availability	2 to 3 Weeks
Quantity

Onset HOBO COUPLER2-B Coupler for U20 Water Level Data Loggers
Model: COUPLER2-B

Regular Price	$15.00 USD
Availability	8 to 9 Weeks

Qty:

Regular Price	$15.00 USD
Availability	8 to 9 Weeks
Quantity

Onset HOBO COUPLER2-D Replacement Coupler for the TidbiT v2
Model: COUPLER2-D

Regular Price	$15.00 USD
Availability	1 Week

Qty:

Regular Price	$15.00 USD
Availability	1 Week
Quantity

Onset HOBO COUPLER2-C Replacement Coupler
Model: COUPLER2-C

Regular Price	$15.00 USD
Availability	1 to 2 Weeks

Qty:

Regular Price	$15.00 USD
Availability	1 to 2 Weeks
Quantity

Onset HOBO M-MLA Mast Level
Model: M-MLA

Regular Price	$16.34 USD
Availability	2 to 3 Weeks

Qty:

Regular Price	$16.34 USD
Availability	2 to 3 Weeks
Quantity

Onset HOBO MX2300-RS-BRACKET Mounting Bracket for RS1 or M-RSA
Model: MX2300-RS-BRACKET

Regular Price	$17.00 USD
Availability	2 to 3 Weeks

Qty:

Regular Price	$17.00 USD
Availability	2 to 3 Weeks
Quantity

Onset HOBO CABLE-USBMB USB Cable
Model: CABLE-USBMB

Regular Price	$18.00 USD
Availability	6 in Stock

Qty:

Regular Price	$18.00 USD
Availability	6 in Stock
Quantity

Onset HOBO DESICCANT2 Large Desiccant Pack, 25-pack
Model: DESICCANT2

Regular Price	$20.00 USD
Availability	3 to 4 Weeks

Qty:

Regular Price	$20.00 USD
Availability	3 to 4 Weeks
Quantity

Onset HOBO HRB-TEMP Replacement Batteries, 6-box
Model: HRB-TEMP

Regular Price	$20.00 USD
Availability	2 to 3 Weeks

Qty:

Regular Price	$20.00 USD
Availability	2 to 3 Weeks
Quantity

Onset HOBO BOOT-TIDBIT-WH Protective Boot for TidbiT, 5-pack, white
Model: BOOT-TIDBIT-WH

Sale Price	$20.00 USD
Regular Price	$25.00 USD
Availability	5 in Stock

Qty:

Sale Price	$20.00 USD
Regular Price	$25.00 USD
Availability	5 in Stock
Quantity

Showing 1 to 20 of 158 products

4.8/5 Stars

4.8/5 Stars

Water

Onset HOBO 85-ORING-15 Replacement O-ring for 85-DOMEPLUG-1 Model: 85-ORING-15

Qty:

Onset HOBO 85-SEALANT Sealant for Submersible Case Model: 85-SEALANT

Qty:

Onset HOBO 85-CAPLUG-H20-B End Cap for Protective Black Boot Model: 85-CAPLUG-H20-B

Qty:

Onset HOBO HRB-LI-AAA AAA Batteries, 2-pack Model: HRB-LI-AAA

Qty:

Onset HOBO MX2201-02-ORING O-ring for the MX2201 and MX2202, 5-pack Model: MX2201-02-ORING

Qty:

Onset HOBO MX2203-ORING O-ring for the MX2203, 5-pack Model: MX2203-ORING

Qty:

Onset HOBO DESICCANT1 Small Desiccant Pack, 25-pack Model: DESICCANT1

Qty:

Onset HOBO HRB-TEMP-1 Replacement Batteries, 5-pack Model: HRB-TEMP-1

Qty:

Onset HOBO MX2200-RS-BRACKET Bracket for RS1 or M-RSA Model: MX2200-RS-BRACKET

Qty:

Onset HOBO 85-DESICCANT6 Desiccant Pack for Onset HOBO Micro Station Model: 85-DESICCANT6

Qty:

Onset HOBO COUPLER2-A Coupler for UA Pendant Data Loggers Model: COUPLER2-A

Qty:

Onset HOBO COUPLER2-B Coupler for U20 Water Level Data Loggers Model: COUPLER2-B

Qty:

Onset HOBO COUPLER2-D Replacement Coupler for the TidbiT v2 Model: COUPLER2-D

Qty:

Onset HOBO COUPLER2-C Replacement Coupler Model: COUPLER2-C

Qty:

Onset HOBO M-MLA Mast Level Model: M-MLA

Qty:

Onset HOBO MX2300-RS-BRACKET Mounting Bracket for RS1 or M-RSA Model: MX2300-RS-BRACKET

Qty:

Onset HOBO CABLE-USBMB USB Cable Model: CABLE-USBMB

Qty:

Onset HOBO DESICCANT2 Large Desiccant Pack, 25-pack Model: DESICCANT2

Qty:

Onset HOBO HRB-TEMP Replacement Batteries, 6-box Model: HRB-TEMP

Qty:

Onset HOBO BOOT-TIDBIT-WH Protective Boot for TidbiT, 5-pack, white Model: BOOT-TIDBIT-WH

Qty:

Onset HOBO 85-ORING-15 Replacement O-ring for 85-DOMEPLUG-1
Model: 85-ORING-15

Onset HOBO 85-SEALANT Sealant for Submersible Case
Model: 85-SEALANT

Onset HOBO 85-CAPLUG-H20-B End Cap for Protective Black Boot
Model: 85-CAPLUG-H20-B

Onset HOBO HRB-LI-AAA AAA Batteries, 2-pack
Model: HRB-LI-AAA

Onset HOBO MX2201-02-ORING O-ring for the MX2201 and MX2202, 5-pack
Model: MX2201-02-ORING

Onset HOBO MX2203-ORING O-ring for the MX2203, 5-pack
Model: MX2203-ORING

Onset HOBO DESICCANT1 Small Desiccant Pack, 25-pack
Model: DESICCANT1

Onset HOBO HRB-TEMP-1 Replacement Batteries, 5-pack
Model: HRB-TEMP-1

Onset HOBO MX2200-RS-BRACKET Bracket for RS1 or M-RSA
Model: MX2200-RS-BRACKET

Onset HOBO 85-DESICCANT6 Desiccant Pack for Onset HOBO Micro Station
Model: 85-DESICCANT6

Onset HOBO COUPLER2-A Coupler for UA Pendant Data Loggers
Model: COUPLER2-A

Onset HOBO COUPLER2-B Coupler for U20 Water Level Data Loggers
Model: COUPLER2-B

Onset HOBO COUPLER2-D Replacement Coupler for the TidbiT v2
Model: COUPLER2-D

Onset HOBO COUPLER2-C Replacement Coupler
Model: COUPLER2-C

Onset HOBO M-MLA Mast Level
Model: M-MLA

Onset HOBO MX2300-RS-BRACKET Mounting Bracket for RS1 or M-RSA
Model: MX2300-RS-BRACKET

Onset HOBO CABLE-USBMB USB Cable
Model: CABLE-USBMB

Onset HOBO DESICCANT2 Large Desiccant Pack, 25-pack
Model: DESICCANT2

Onset HOBO HRB-TEMP Replacement Batteries, 6-box
Model: HRB-TEMP

Onset HOBO BOOT-TIDBIT-WH Protective Boot for TidbiT, 5-pack, white
Model: BOOT-TIDBIT-WH