Relative Humidity (RH) Data Loggers & Sensors




HOBO U10 Temperature Relative Humidity Data Logger - U10-003

part # U10-003 (View Specs)
  • Supported Measurements:
    Relative Humidity, Temperature
  • Small size for mounting anywhere
  • Low cost lets you monitor many locations economically
  • Internal temp & humidity sensors for easy deployment
  • Replacement for: H08-003-02
Minimum System Requirements


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$81
1-9 10-99 100+
$81 $75 $69



HOBO U12 Temperature/Relative Humidity Data Logger - U12-011

part # U12-011 (View Specs)
  • Supported Measurements:
    Relative Humidity, Temperature
  • 12-bit resolution provides high accuracy
  • Stores 43,000 measurements
  • Five models to choose from, with flexible measurement options
  • Programmable and push button start
Minimum System Requirements


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$115
1-9 10-99 100+
$115 $106 $98



U14 LCD Logger - Temperature/Relative Humidity (RH) Data Logger - U14-001

part # U14-001 (View Specs)
  • Supported Measurements:
    Relative Humidity, Temperature
  • Real-time temp/RH display
  • Alarm display and output

Minimum System Requirements


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$209
1-9 10-99 100+
$209 $193 $178



HOBO U12 Temperature/Relative Humidity/Light/External Data Logger - U12-012

part # U12-012 (View Specs)
  • Supported Measurements (some sensors sold separately):
    4-20mA, AC Current, AC Voltage, Air Velocity, Carbon Dioxide, Compressed Air Flow See more, DC Current, DC Voltage, Gauge Pressure, Kilowatts (kW), Light Intensity, Relative Humidity, Temperature, Volatile Organic Compound See less
  • 12-bit resolution provides high accuracy
  • Stores 43,000 measurements
  • Programmable and push button start
  • Direct USB interface for fast data offload
  • Compatible with Onset’s HOBO U-Shuttle for convenient data transport
  • Replacement for: H08-004-02, H08-006-04
Minimum System Requirements


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$133
1-9 10-99 100+
$133 $123 $113



HOBO U12 Temperature/Relative Humidity/2 External Channel Data Logger - U12-013

part # U12-013 (View Specs)
  • Supported Measurements (some sensors sold separately):
    4-20mA, AC Current, AC Voltage, Air Velocity, Carbon Dioxide, Compressed Air Flow See more, DC Current, DC Voltage, Gauge Pressure, Kilowatts (kW), Relative Humidity, Temperature, Volatile Organic Compound See less
  • 12-bit resolution provides high accuracy
  • Stores 43,000 measurements
  • Programmable and push button start
  • Direct USB interface for fast data offload
  • Compatible with Onset’s HOBO U-Shuttle for convenient data transport
Minimum System Requirements


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$133
1-9 10-99 100+
$133 $123 $113



HOBO U14 LCD Data Logger - External Temperature/RH - U14-002

part # U14-002 (View Specs)
  • Supported Measurements (sensors sold separately):
    Relative Humidity, Temperature
  • Real-time display of Temperature and RH
  • Alarm display and output ensure timely notification of out-of-range conditions
Minimum System Requirements


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$169
1-9 10-99 100+
$169 $156 $144



HOBO ZW-003 Temperature/Relative Humidity (RH) Data Node

part # ZW-003 (View Specs)
  • Supported Measurements:
    Relative Humidity, Temperature
  • Wirelessly transmits real-time temperature and relative humidity (RH) data
  • Compact size for easy deployment
  • Notifies you of alarm conditions via email or text messages
  • Onboard buffer memory helps prevent data loss
  • Powerful HOBOware® Pro software for organizing and viewing data (included with required HOBO data receiver)
Minimum System Requirements


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$249
1-9 10-99 100+
$249 $230 $212



HOBO ZW-005 Four-Channel Data Node
1 Temp, 1 RH, 1 Analog and 1 Pulse

part # ZW-005 (View Specs)
  • Supported Measurements (some sensors sold separately):
    4-20mA, AC Current, AC Voltage, Air Velocity, Amp Hour (Ah), Amps (A) See more, Carbon Dioxide, Compressed Air Flow, DC Current, DC Voltage, Differential Pressure, Gauge Pressure, Kilowatt Hours (kWh), Kilowatts (kW), Power Factor (PF), Pulse Input, Relative Humidity, Temperature, Volatile Organic Compound, Volt-Amp Reactive (VAR), Volt-Amp Reactive Hour (VARh), Volt-Amps (VA), Volts (V), Water Flow, Watt Hours (Wh), Watts (W) See less
  • Wirelessly transmits real-time temperature data
  • Compact size for easy deployment
  • Notifies you of alarm conditions via email or text messages
  • Onboard buffer memory helps prevent data loss
  • Includes an external 2m temperature/RH sensor probe
  • Powerful HOBOware® Pro software for organizing and viewing data (included with required HOBO data receiver)
Minimum System Requirements


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$299
1-9 10-99 100+
$299 $277 $254



HOBO ZW-007 Two External Channel Data Node
External Temp/RH and 2 Analog

part # ZW-007 (View Specs)
  • Supported Measurements (some sensors sold separately):
    4-20mA, AC Current, AC Voltage, Air Velocity, Carbon Dioxide, Compressed Air Flow See more, DC Current, DC Voltage, Differential Pressure, Gauge Pressure, Kilowatts (kW), Relative Humidity, Temperature, Volatile Organic Compound See less
  • Wirelessly transmits real-time temperature data
  • Compact size for easy deployment
  • Notifies you of alarm conditions via email or text messages
  • Onboard buffer memory helps prevent data loss
  • Includes an external 2m temperature/RH sensor probe
  • Powerful HOBOware® Pro software for organizing and viewing data (included with required HOBO data receiver)
Minimum System Requirements


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$299
1-9 10-99 100+
$299 $277 $254



HOBO U23 Pro v2 Temperature/Relative Humidity Data Logger - U23-001

part # U23-001 (View Specs)
  • Supported Measurements:
    Relative Humidity, Temperature
  • Weatherproof housing for use in outdoor or condensing environments
  • High accuracy
  • Replacement for: H08-032-08
Minimum System Requirements


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$163
1-9 10-99 100+
$163 $151 $139



HOBO U23 Pro v2 External Temperature/Relative Humidity Data Logger - U23-002

part # U23-002 (View Specs)
  • Supported Measurements:
    Relative Humidity, Temperature
  • Weatherproof housing for use in outdoor or condensing environments
  • High accuracy
  • Replacement for: H08-032-08
Minimum System Requirements


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$193
1-9 10-99 100+
$193 $179 $164



HOBO Micro Station Data Logger - H21-002
4-external channels

part # H21-002 (View Specs)
  • Supported Measurements (sensors sold separately):
    Weather: Barometric Pressure, Leaf Wetness, Light Intensity, PAR, Pulse Input, Rainfall See more, Relative Humidity, Soil Moisture, Solar Radiation, Temperature, Wind Speed & Direction, 4-20mA, Voltage Input See less
    Energy: DC Voltage, kWh, Pulse Input, Relative Himidity, Temperature, Water Flow, 4-20mA
  • Improved weatherproof enclosure for harsh environments
  • Optional analog and pulse inputs for 3rd-party sensors
  • Battery-powered for up to a year - no solar panels required
Minimum System Requirements


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$220
1-4 5-24 25-49 50+
$220 $209 $198 $187



HOBO® Energy Logger - H22-001
multi-channel data logger

part # H22-001 (View Specs)
  • Supported Measurements (sensors sold separately):
    4-20mA, AC Current, AC Voltage, Air Velocity, Amp Hour (Ah), Carbon Dioxide See more, Compressed Air Flow, DC Current, DC Voltage, Differential Pressure, Gauge Pressure, Kilowatt Hours (kWh), Kilowatts (kW), Power Factor (PF), Pulse Input, Relative Humidity, Temperature, Volatile Organic Compound, Volt-Amp Reactive (VAR), Volt-Amp Reactive Hour (VARh), Volt-Amps (VA), Water Flow, Watt Hours (Wh), Watts (W), Wind See less
  • Records up to 15 channels
  • Provides 12v excitation for third-party sensors
  • Innovative, snap-in FlexSmart™ signal conditioning modules convert signals from nearly any type of sensor.
Minimum System Requirements


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$315
1-4 5-24 25-49 50+
$315 $299 $283 $268



HOBO U30 USB Data Logger - U30-NRC
15 Channel Energy Monitoring and Weather Station

part # U30-NRC (View Specs)
  • Supported Measurements (sensors sold separately):
    Weather: Barometric Pressure, Leaf Wetness, Light Intensity, PAR, Pulse Input, Rainfall See more, Relative Humidity, Soil Moisture, Solar Radiation, Temperature, Wind Speed & Direction, 4-20mA, Voltage Input See less
    Energy: AC Current, AC Voltage, Air Velocity, Amp Hour (Ah), Carbon Dioxide, Compressed Air Flow See more, DC Current, DC Voltage, Differential Pressure, Gauge Pressure, kW, kWh, Power Factor (PF), Pulse Input, Relative Himidity, Temperature, Volatile Organic Compound (VOC), Volt-Amp Reactive (VAR), Volt-Amp Reactive Hour (VARh), Volt-Amps (VA), Volts (V), Water Flow, Watt Hours (Wh), Watts (W), 4-20mA, Amps (A) See less
  • Fast data offload via USB
  • Optional analog inputs with sensor excitation
  • Includes relay that can be activated on user-defined alarm conditions
  • Up to 15 channels of environmental data can be graphed and analyzed with HOBOware® Pro software.
Minimum System Requirements


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HOBO® U30 Ethernet Data Logger - U30-ETH
15 Channel Web-based Monitoring System

part # U30-ETH (View Specs)
  • Supported Measurements (sensors sold separately):
    Weather: Barometric Pressure, Leaf Wetness, Light Intensity, PAR, Pulse Input, Rainfall See more, Relative Humidity, Soil Moisture, Solar Radiation, Temperature, Wind Speed & Direction, 4-20mA, Voltage Input See less
    Energy: AC Current, AC Voltage, Air Velocity, Amp Hour (Ah), Carbon Dioxide, Compressed Air Flow See more, DC Current, DC Voltage, Differential Pressure, Gauge Pressure, kW, kWh, Power Factor (PF), Pulse Input, Relative Himidity, Temperature, Volatile Organic Compound (VOC), Volt-Amp Reactive (VAR), Volt-Amp Reactive Hour (VARh), Volt-Amps (VA), Volts (V), Water Flow, Watt Hours (Wh), Watts (W), 4-20mA, Amps (A) See less
  • Optional analog inputs with sensor excitation
  • Notifies you of alarm conditions via email or text messages
  • Includes relay that can be activated on user-defined alarm conditions
  • Up to 15 channels of data can be accessed remotely via Onset's web-enabled software platform, HOBOlink™.
Minimum System Requirements


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Need Help?
Call 1-800-564-4377 or
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HOBO U30 Wi-Fi Data Logger - U30-WIF
15 Channel Web-based Monitoring System

part # U30-WIF (View Specs)
  • Supported Measurements (sensors sold separately):
    Weather: Barometric Pressure, Leaf Wetness, Light Intensity, PAR, Pulse Input, Rainfall See more, Relative Humidity, Soil Moisture, Solar Radiation, Temperature, Wind Speed & Direction, 4-20mA, Voltage Input See less
    Energy: AC Current, AC Voltage, Air Velocity, Amp Hour (Ah), Carbon Dioxide, Compressed Air Flow See more, DC Current, DC Voltage, Differential Pressure, Gauge Pressure, kW, kWh, Power Factor (PF), Pulse Input, Relative Himidity, Temperature, Volatile Organic Compound (VOC), Volt-Amp Reactive (VAR), Volt-Amp Reactive Hour (VARh), Volt-Amps (VA), Volts (V), Water Flow, Watt Hours (Wh), Watts (W), 4-20mA, Amps (A) See less
  • Optional analog inputs with sensor excitation
  • Notifies you of alarm conditions via email or text messages
  • Includes relay that can be activated on user-defined alarm conditions
  • Up to 15 channels of data can be accessed remotely via Onset's web-enabled software platform, HOBOlink™.
Minimum System Requirements


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Need Help?
Call 1-800-564-4377 or
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HOBO U30 Cellular Data Logger - U30-GSM
15 Channel Web-based Monitoring System

part # U30-GSM (View Specs)
  • Supported Measurements (sensors sold separately):
    Weather: Barometric Pressure, Leaf Wetness, Light Intensity, PAR, Pulse Input, Rainfall See more, Relative Humidity, Soil Moisture, Solar Radiation, Temperature, Wind Speed & Direction, 4-20mA, Voltage Input See less
    Energy: AC Current, AC Voltage, Air Velocity, Amp Hour (Ah), Carbon Dioxide, Compressed Air Flow See more, DC Current, DC Voltage, Differential Pressure, Gauge Pressure, kW, kWh, Power Factor (PF), Pulse Input, Relative Himidity, Temperature, Volatile Organic Compound (VOC), Volt-Amp Reactive (VAR), Volt-Amp Reactive Hour (VARh), Volt-Amps (VA), Volts (V), Water Flow, Watt Hours (Wh), Watts (W), 4-20mA, Amps (A) See less
  • Optional analog inputs with sensor excitation
  • Notifies you of alarm conditions via email or text messages
  • Includes relay that can be activated on user-defined alarm conditions
  • Can be used in over 30 countries
  • Up to 15 channels of data can be accessed remotely via Onset's web-enabled software platform, HOBOlink™.
Minimum System Requirements


See Compatible Sensors
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Need Help?
Call 1-800-564-4377 or
Chat Live Now.