Outdoor

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

HOBO outdoor applications

Whether it’s a stand-alone data logger, a weather station, or a web-enabled field monitoring system, Onset HOBO outdoor monitoring products are:

  • Highly accurate

  • Easily deployed

  • Affordable

From agricultural research, to ecology studies, to farming – Onset HOBO’s weatherproof data loggers and stations offer unparalleled ease-of-use and deliver exceptional reliability – even in the harshest outdoor environments.


Onset HOBO MX2500-STORE-SOLN Electrode Storage Solution, 475 mL-

Onset HOBO MX2500-STORE-SOLN Electrode Storage Solution, 475 mL
Model: MX2500-STORE-SOLN

Your Price $33.00 USD
Availability 2 to 3 Weeks

Qty:

Your Price $33.00 USD
Availability 2 to 3 Weeks
Quantity

Onset HOBO MX2500-STORE-CAP Electrode Storage Cap-

Onset HOBO MX2500-STORE-CAP Electrode Storage Cap
Model: MX2500-STORE-CAP

Your Price $21.00 USD
Availability 7 to 8 Weeks

Qty:

Your Price $21.00 USD
Availability 7 to 8 Weeks
Quantity

Onset HOBO MX2500-MAINT-KIT-

Onset HOBO MX2500-MAINT-KIT
Model: MX2500-MAINT-KIT

Your Price $99.00 USD
Availability 2 to 3 Weeks

Qty:

Your Price $99.00 USD
Availability 2 to 3 Weeks
Quantity

Onset HOBO MX2500-GUARD Anti-Biofouling Copper Guard-

Onset HOBO MX2500-GUARD Anti-Biofouling Copper Guard
Model: MX2500-GUARD

Your Price $33.00 USD
Availability 2 to 3 Weeks

Qty:

Your Price $33.00 USD
Availability 2 to 3 Weeks
Quantity

Onset HOBO MX2500-END-CAP Replacement End Cap for the MX2501-

Onset HOBO MX2500-END-CAP Replacement End Cap for the MX2501
Model: MX2500-END-CAP

Your Price $157.00 USD
Availability 2 to 3 Weeks

Qty:

Your Price $157.00 USD
Availability 2 to 3 Weeks
Quantity

Onset HOBO MX2500-ELECTRODE Replacement Electrode for the MX2501-

Onset HOBO MX2500-ELECTRODE Replacement Electrode for the MX2501
Model: MX2500-ELECTRODE

Your Price $170.00 USD
Availability 3 to 4 Weeks

Qty:

Your Price $170.00 USD
Availability 3 to 4 Weeks
Quantity

Onset HOBO MX2500-CAL-KIT Calibration Kit-

Onset HOBO MX2500-CAL-KIT Calibration Kit
Model: MX2500-CAL-KIT

Your Price $69.00 USD
Availability 1 to 2 Weeks

Qty:

Your Price $69.00 USD
Availability 1 to 2 Weeks
Quantity

Onset HOBO MX2500-CAL-BKR Calibration Beaker for the MX2501, 4 oz-

Onset HOBO MX2500-CAL-BKR Calibration Beaker for the MX2501, 4 oz
Model: MX2500-CAL-BKR

Your Price $8.00 USD
Availability 2 to 3 Weeks

Qty:

Your Price $8.00 USD
Availability 2 to 3 Weeks
Quantity

Onset HOBO MX2500-CAL-7 Calibration Solution, pH 7.00, 475 mL-

Onset HOBO MX2500-CAL-7 Calibration Solution, pH 7.00, 475 mL
Model: MX2500-CAL-7

Your Price $22.00 USD
Availability 2 to 3 Weeks

Qty:

Your Price $22.00 USD
Availability 2 to 3 Weeks
Quantity

Onset HOBO MX2500-CAL-4 Calibration Solution, pH 4.01, 475 mL-

Onset HOBO MX2500-CAL-4 Calibration Solution, pH 4.01, 475 mL
Model: MX2500-CAL-4

Your Price $22.00 USD
Availability 2 to 3 Weeks

Qty:

Your Price $22.00 USD
Availability 2 to 3 Weeks
Quantity

Onset HOBO MX2500-CAL-10 Calibration Solution, pH 10.00, 475 mL-

Onset HOBO MX2500-CAL-10 Calibration Solution, pH 10.00, 475 mL
Model: MX2500-CAL-10

Your Price $22.00 USD
Availability 2 to 3 Weeks

Qty:

Your Price $22.00 USD
Availability 2 to 3 Weeks
Quantity

Onset HOBO MX2305 Wireless Temperature Data Logger with internal sensor-

Onset HOBO MX2305 Wireless Temperature Data Logger with internal sensor
Model: MX2305

Your Price $135.00 USD
Availability 6 to 7 Weeks

Qty:

Your Price $135.00 USD
Availability 6 to 7 Weeks
Quantity

Onset HOBO MX2304 Wireless Temperature Data Logger with external sensor-

Onset HOBO MX2304 Wireless Temperature Data Logger with external sensor
Model: MX2304

Your Price $180.00 USD
Availability 8 to 9 Weeks

Qty:

Your Price $180.00 USD
Availability 8 to 9 Weeks
Quantity

Onset HOBO MX2303 Wireless Temperature Data Logger with two external sensors-

Onset HOBO MX2303 Wireless Temperature Data Logger with two external sensors
Model: MX2303

Your Price $245.00 USD
Availability 6 to 7 Weeks

Qty:

Your Price $245.00 USD
Availability 6 to 7 Weeks
Quantity

Onset HOBO MX2302A External Wireless Temperature/Humidity Data Logger-

Onset HOBO MX2302A External Wireless Temperature/Humidity Data Logger
Model: MX2302A

Your Price $245.00 USD
Availability 2 to 3 Weeks

Qty:

Your Price $245.00 USD
Availability 2 to 3 Weeks
Quantity

Onset HOBO MX2301A Wireless Temperature/RH Humidity Data Logger-

Onset HOBO MX2301A Wireless Temperature/RH Humidity Data Logger
Model: MX2301A

Your Price $205.00 USD
Availability 4 to 5 Weeks

Qty:

Your Price $205.00 USD
Availability 4 to 5 Weeks
Quantity

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

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

Your Price $19.00 USD
Availability 2 to 3 Weeks

Qty:

Your Price $19.00 USD
Availability 2 to 3 Weeks
Quantity

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

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

Your Price $12.00 USD
Availability 2 to 3 Weeks

Qty:

Your Price $12.00 USD
Availability 2 to 3 Weeks
Quantity

Onset HOBO MX2202 Pendant MX Temperature/Light Data Logger-

Onset HOBO MX2202 Pendant MX Temperature/Light Data Logger
Model: MX2202

Your Price $95.00 USD
Availability 9 in Stock

Qty:

Your Price $95.00 USD
Availability 9 in Stock
Quantity

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

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

Your Price $12.00 USD
Availability 6 to 7 Weeks

Qty:

Your Price $12.00 USD
Availability 6 to 7 Weeks
Quantity

We Ship Free on Orders Over &99 within Canada