Water

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

HOBO water 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.


Onset HOBO CABLE-ADAP5 DC Voltage Input Sensor Cable, 0 to 5 V-

Onset HOBO CABLE-ADAP5 DC Voltage Input Sensor Cable, 0 to 5 V
Model: CABLE-ADAP5

Your Price $50.00 USD
Availability 5 to 6 Weeks

Qty:

Your Price $50.00 USD
Availability 5 to 6 Weeks
Quantity

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

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

Your Price $50.00 USD
Availability 1 Week

Qty:

Your Price $50.00 USD
Availability 1 Week
Quantity

Onset HOBO CABLE-1-CRIMP Crimp Sleeve for CABLE-1-XX, 12-pack-

Onset HOBO CABLE-1-CRIMP Crimp Sleeve for CABLE-1-XX, 12-pack
Model: CABLE-1-CRIMP

Your Price $45.00 USD
Availability 1 to 2 Weeks

Qty:

Your Price $45.00 USD
Availability 1 to 2 Weeks
Quantity

Onset HOBO S-ADAPT-5 Communication Adapter, 1 to 2 sensor-

Onset HOBO S-ADAPT-5 Communication Adapter, 1 to 2 sensor
Model: S-ADAPT-5

Your Price $40.00 USD
Availability 2 to 3 Weeks

Qty:

Your Price $40.00 USD
Availability 2 to 3 Weeks
Quantity

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

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

Your Price $40.00 USD
Availability 4 to 5 Weeks

Qty:

Your Price $40.00 USD
Availability 4 to 5 Weeks
Quantity

Onset HOBO M-SKB Stake Kit, 0.25"-

Onset HOBO M-SKB Stake Kit, 0.25"
Model: M-SKB

Your Price $40.00 USD
Availability 3 to 4 Weeks

Qty:

Your Price $40.00 USD
Availability 3 to 4 Weeks
Quantity

Onset HOBO AC-SENS-1 AC Power Adapter, 12 VDC power-

Onset HOBO AC-SENS-1 AC Power Adapter, 12 VDC power
Model: AC-SENS-1

Your Price $40.00 USD
Availability 7 to 8 Weeks

Qty:

Your Price $40.00 USD
Availability 7 to 8 Weeks
Quantity

Onset HOBO BHW-DA-GPP-CD Grains Per Pound Data Assistant Software-

Onset HOBO BHW-DA-GPP-CD Grains Per Pound Data Assistant Software
Model: BHW-DA-GPP-CD

Your Price $37.03 USD
Availability 2 to 3 Weeks

Qty:

Your Price $37.03 USD
Availability 2 to 3 Weeks
Quantity

Onset HOBO HRB-LI-6 Replacement AA Batteries, 6-pack-

Onset HOBO HRB-LI-6 Replacement AA Batteries, 6-pack
Model: HRB-LI-6

Your Price $37.00 USD
Availability 2 to 3 Weeks

Qty:

Your Price $37.00 USD
Availability 2 to 3 Weeks
Quantity

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

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

Your Price $35.00 USD
Availability 2 to 3 Weeks

Qty:

Your Price $35.00 USD
Availability 2 to 3 Weeks
Quantity

Onset HOBO BOOT-TIDBIT-BK Protective Boot for TidbiT, 5-pack, black-

Onset HOBO BOOT-TIDBIT-BK Protective Boot for TidbiT, 5-pack, black
Model: BOOT-TIDBIT-BK

Your Price $35.00 USD
Availability 2 to 3 Weeks

Qty:

Your Price $35.00 USD
Availability 2 to 3 Weeks
Quantity

Onset HOBO CABLE-RX-PWR External DC Power Cable for RX3000-

Onset HOBO CABLE-RX-PWR External DC Power Cable for RX3000
Model: CABLE-RX-PWR

Your Price $35.00 USD
Availability 5 to 6 Weeks

Qty:

Your Price $35.00 USD
Availability 5 to 6 Weeks
Quantity

Onset HOBO BOOT-BLK Protective Boot for WTemp Pro Data Logger, black-

Onset HOBO BOOT-BLK Protective Boot for WTemp Pro Data Logger, black
Model: BOOT-BLK

Your Price $30.00 USD
Availability 2 to 3 Weeks

Qty:

Your Price $30.00 USD
Availability 2 to 3 Weeks
Quantity

Onset HOBO UA-PARTSKIT Pendant Replacement Parts Kit-

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

Your Price $30.00 USD
Availability 7 to 8 Weeks

Qty:

Your Price $30.00 USD
Availability 7 to 8 Weeks
Quantity

Onset HOBO U12-015-03-ORING-KIT Replacement O-Ring Kit-

Onset HOBO U12-015-03-ORING-KIT Replacement O-Ring Kit
Model: U12-015-03-Oring-Kit

Your Price $24.00 USD
Availability 2 to 3 Weeks

Qty:

Your Price $24.00 USD
Availability 2 to 3 Weeks
Quantity

Onset HOBO U12-015-Oring-E Replacement O-Ring Kit (EPDM)-

Onset HOBO U12-015-Oring-E Replacement O-Ring Kit (EPDM)
Model: U12-015-Oring-E

Your Price $22.00 USD
Availability 2 to 3 Weeks

Qty:

Your Price $22.00 USD
Availability 2 to 3 Weeks
Quantity

Onset HOBO U12-015-Oring-V Replacement O-Ring Kit (Viton)-

Onset HOBO U12-015-Oring-V Replacement O-Ring Kit (Viton)
Model: U12-015-Oring-V

Your Price $22.00 USD
Availability 2 to 3 Weeks

Qty:

Your Price $22.00 USD
Availability 2 to 3 Weeks
Quantity

Onset HOBO DESICCANT2 Large Desiccant Pack, 25-pack-

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

Your Price $21.00 USD
Availability 3 to 4 Weeks

Qty:

Your Price $21.00 USD
Availability 3 to 4 Weeks
Quantity

Onset HOBO CABLE-USBMB USB Cable-

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

Your Price $21.00 USD
Availability 6 in Stock

Qty:

Your Price $21.00 USD
Availability 6 in Stock
Quantity

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

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

Your Price $20.00 USD
Availability 2 to 3 Weeks

Qty:

Your Price $20.00 USD
Availability 2 to 3 Weeks
Quantity