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 85-CAPLUG-H20-B End Cap for Protective Black Boot-

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

Your Price $7.00 USD
Availability 4 Days

Qty:

Your Price $7.00 USD
Availability 4 Days
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 $17.00 USD
Availability 2 to 3 Weeks

Qty:

Your Price $17.00 USD
Availability 2 to 3 Weeks
Quantity

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

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

Your Price $15.00 USD
Availability 8 to 9 Weeks

Qty:

Your Price $15.00 USD
Availability 8 to 9 Weeks
Quantity

Onset HOBO DESICCANT1 Small Desiccant Pack, 25-pack-

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

Your Price $13.00 USD
Availability 6 to 7 Weeks

Qty:

Your Price $13.00 USD
Availability 6 to 7 Weeks
Quantity

Onset HOBO DESICCANT2 Large Desiccant Pack, 25-pack-

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

Your Price $20.00 USD
Availability 3 to 4 Weeks

Qty:

Your Price $20.00 USD
Availability 3 to 4 Weeks
Quantity

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

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

Your Price $13.00 USD
Availability 1 to 2 Weeks

Qty:

Your Price $13.00 USD
Availability 1 to 2 Weeks
Quantity

Onset HOBO M-MLA Mast Level-

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

Your Price $16.34 USD
Availability 2 to 3 Weeks

Qty:

Your Price $16.34 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 $21.00 USD
Availability 2 to 3 Weeks

Qty:

Your Price $21.00 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 $21.00 USD
Availability 2 to 3 Weeks

Qty:

Your Price $21.00 USD
Availability 2 to 3 Weeks
Quantity

Onset HOBO MX2501 pH and Temperature Data Logger with Bluetooth Low Energy-

Onset HOBO MX2501 pH and Temperature Data Logger with Bluetooth Low Energy
Model: MX2501

Your Price $850.00 USD
Availability 7 to 8 Weeks

Qty:

Your Price $850.00 USD
Availability 7 to 8 Weeks
Quantity

Onset HOBO SP-610 User-Supplied SIM Service Plan for the RX2100, 10 minute/1 minute-

Onset HOBO SP-610 User-Supplied SIM Service Plan for the RX2100, 10 minute/1 minute
Model: SP-610

Your Price $189.00 USD
Availability 11 to 12 Weeks

Qty:

Your Price $189.00 USD
Availability 11 to 12 Weeks
Quantity

Onset HOBO SP-811 Basic 4G Service Plan for the RX2100, 1 hour/1 minute, global-

Onset HOBO SP-811 Basic 4G Service Plan for the RX2100, 1 hour/1 minute, global
Model: SP-811

Your Price $252.00 USD
Availability 2 to 3 Weeks

Qty:

Your Price $252.00 USD
Availability 2 to 3 Weeks
Quantity

Onset HOBO SP-812 Basic 4G Service Plan for the RX2100, 1 hour/1 minute, US only-

Onset HOBO SP-812 Basic 4G Service Plan for the RX2100, 1 hour/1 minute, US only
Model: SP-812

Your Price $252.00 USD
Availability 2 to 3 Weeks

Qty:

Your Price $252.00 USD
Availability 2 to 3 Weeks
Quantity

Onset HOBO SP-813 Standard 4G Service Plan for the RX2100, 10 minutes/1 minute, global-

Onset HOBO SP-813 Standard 4G Service Plan for the RX2100, 10 minutes/1 minute, global
Model: SP-813

Your Price $379.00 USD
Availability 2 to 3 Weeks

Qty:

Your Price $379.00 USD
Availability 2 to 3 Weeks
Quantity

Onset HOBO SP-814 Standard 4G Service Plan for the RX2100, 10 minutes/1 minute, US only-

Onset HOBO SP-814 Standard 4G Service Plan for the RX2100, 10 minutes/1 minute, US only
Model: SP-814

Your Price $379.00 USD
Availability 2 to 3 Weeks

Qty:

Your Price $379.00 USD
Availability 2 to 3 Weeks
Quantity

Onset HOBO RX2101 MicroRX Station, battery-powered-

Onset HOBO RX2101 MicroRX Station, battery-powered
Model: RX2101

Your Price $735.00 USD
Availability 2 to 3 Weeks

Qty:

Your Price $735.00 USD
Availability 2 to 3 Weeks
Quantity

Onset HOBO RX2102 MicroRX Station with built-in solar panel-

Onset HOBO RX2102 MicroRX Station with built-in solar panel
Model: RX2102

Your Price $799.00 USD
Availability 2 to 3 Weeks

Qty:

Your Price $799.00 USD
Availability 2 to 3 Weeks
Quantity

Onset HOBO RX2103 MicroRX Water Level Station, battery-powered-

Onset HOBO RX2103 MicroRX Water Level Station, battery-powered
Model: RX2103

Your Price $830.00 USD
Availability 2 to 3 Weeks
Your Price $830.00 USD
Availability 2 to 3 Weeks
Quantity
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Onset HOBO RX2104 MicroRX Water Level Station with built-in solar panel-

Onset HOBO RX2104 MicroRX Water Level Station with built-in solar panel
Model: RX2104

Your Price $899.00 USD
Availability 2 to 3 Weeks
Your Price $899.00 USD
Availability 2 to 3 Weeks
Quantity
Learn More

Onset HOBO CABLE-RWL-1.0 Water Level Sensor Cable, 1 m-

Onset HOBO CABLE-RWL-1.0 Water Level Sensor Cable, 1 m
Model: CABLE-RWL-1.0

Your Price $126.00 USD
Availability 2 to 3 Weeks

Qty:

Your Price $126.00 USD
Availability 2 to 3 Weeks
Quantity

We Ship Free on Orders Over &99 within Canada