Data Loggers - Your Source for Temperature Data Loggers, Humidity Data Loggers, Pressure Data Loggers,Relative Humidity Data Loggers,CO data loggers,CO2 data loggers,Rainfall Gauges,Soil Moisture Content Measurement and many other data logging,measurement or recording devices
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Onset HOBO Data Loggers

Small, battery-powered data loggers for use in monitoring indoor, outdoor, and underwater environments. Affordable, accurate, and reliable data logger performance, known the world over and in outerspace.

UX100 Indoor Temperature and Humidity Data Loggers
  • Measure Temperature and Humidity with Internal or External Sensors
  • LCD Display Shows Current Readings, Alarm, Battery and Operating Status
  • Stores up to 84,650 Readings onto Internal Memory
  • 1 Second to 18 Hour User-Selectable Sampling Rate
  • Requires USB Cable. HOBOware Software Available as a Download
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Starting Price: $75.00
UX100 Indoor Temperature and Humidity Data Loggers
U20L Water Level Data Loggers
  • Records Water Level (Pressure Depth) and Temperature in Fresh and Saltwater Environments
  • Available in 3 Different Water Depths: 0 to 13ft, 0 to 30ft and 0 to 100ft
  • Factory Replaceable 2/3 AA Lithium Battery with 5 Year Life
  • Stores up to 21,700 Measured Readings with Date/Time Stamp
  • Requires HOBOWare Pro Software and USB Optic Base Station or Waterproof Shuttle
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Starting Price: $299.00
U20L Water Level Data Loggers
Bluetooth Temperature Humidity Data Logger
  • View Temperature and Humidity Reports on iOS Devices using HOBOmobile App
  • -20°C to 70°C and 1% to 90% RH Measurement Ranges and ±0.21°C and ±2% RH Accuracy
  • Stores up to 84,650 Readings Internally if Bluetooth Communications Not Available
  • User-Replaceable AAA Alkaline Batteries with 1 Year Battery Life
  • Includes Mounting Tape and Batteries. HOBOmobile App Available As Free Download
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Starting Price: $135.00
Bluetooth Temperature Humidity Data Logger
UX120 Series 4-Channel Data Loggers
  • 4-Channel Indoor Data Loggers for Thermocouples, Analog Signals, Pulse Signals, Event, State Changes and Run Time
  • Stores Recorded Data Internally Until Connected to PC Computer
  • LED Indicators or LCD Display for Alarm, Logging and Battery Status
  • Requires USB Cable. HOBOware Software Available as a Download
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Starting Price: $139.00
UX120 Series 4-Channel Data Loggers
U14 Temperature/RH Data Loggers with LCD Display
  • Measure Temperature and Humidity with Internal or External Sensors
  • LCD Display
  • Stores 43,000 Readings/Measurements
  • 1 Second to 18 Hour User-Selectable Sampling Rate
  • Features Visual Alarms, Low-Battery Indicator, Contact Relay and Programmable Start Date/Time
  • Requires USB Cable. HOBOware Software Available as a Download
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Starting Price: $186.00
U14 Temperature/RH Data Loggers with LCD Display
U30 Remote Monitoring Systems
  • 15-Channel Customizable Data Logging System with Multiple USB, Ethernet, GSM or WiFi Communication Options
  • 1 Second to 18 Hour Sampling Rate
  • Rugged Weatherproof, Tamper-Proof Housing
  • 3 to 5 Year Life with Built-in Rechargeable Battery
  • Includes Alarm Output Relay on User-Defined Sensor Alarms
  • Requires Power Adapter or Solar Panel Option, Smart Sensors, Data Plan and Software (Sold Separately)
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Starting Price: $418.00
U30 Remote Monitoring Systems
UX90 Time of Use Data Loggers
  • Monitor State On/Off, Runtime, Motor Use, Light Use and Occupancy
  • Stores 86,650 or 346,795 (w/ Extended Memory Option) Measured Readings
  • Features LCD Display, 1 Year User-Replaceable Battery
  • Includes Command Strip, Double-Sided Tape and Hook & Loop Strap
  • Requires USB Cable. HOBOware Software Available as a Download
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Starting Price: $92.00
UX90 Time of Use Data Loggers
HOBO U12 Series of Data Loggers
  • Measure temperature, relative humidity (RH), light intensity, CO2, AC current, 4-20mA, 0-2.5V DC
  • High-accuracy temp and relative humidity
  • 12-bit resolution
  • 43K readings
  • Direct USB interface
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Starting Price: $140.00
HOBO U12 Series of Data Loggers
HOBO Indoor Wireless System
  • Measure, Record Sensor Readings Wirelessly and in Real-Time
  • Up to 100 Meter Transmission Range Between Data Nodes, Routers and Receiver
  • System and Sensor Alarms with Email and SMS Messaging Notification
  • Onboard Buffer for Data Storage if Wireless Communications Fails
  • Logs and Transmits Real-Time Data Within a Self-Healing Mesh Network
  • Complete Network Management from HOBOWare Pro Version 3 (Included with Receiver)
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Starting Price: $219.00
HOBO Indoor Wireless System
HOBO U26 Dissolved Oxygen and Temperature Data Logger`
  • Measure and Record Dissolved Oxygen and Temperature in Wet Environments
  • 0 to 30 mg/L Measurement Range with ±0.2 mg/L Accuracy
  • User-Selectable Sampling Rate of 1 Second to 18 Months
  • Includes DO Sensor Cap, Protective Guard and Calibration Boot with Sponge
  • Requires HOBOWare Pro Software (Version 3.3.1+) and Optical Base Unit
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Starting Price: $1,250.00
HOBO U26 Dissolved Oxygen and Temperature Data Logger`
HOBO Conductivity Data Loggers
  • Measures and Records Temperature and Conductivity (Salinity) in Fresh and Salt Bodies of Water
  • 3 Year Battery Life with Factory Replaceable Battery
  • Open Access to Sensor for Cleaning and Software-based Drift Compensation
  • Stores at least 14,400 Sets (Conductivity and Temp) of Measured Readings
  • 1 Second to 18 Hour Sampling Rate
  • Requires HOBOWare Pro Software (Version 3.2+)
More Information
Starting Price: $750.00
HOBO Conductivity Data Loggers
HOBO Underwater Temperature Data Logger
  • Measure and Record Temperature in Underwater or Wet Environments
  • -20°C to 50°C (Water) and -20°C to 70°C (Air) Temperature Measurement Range with ±0.2°C Accuracy
  • Stores 42,000 Measured Readings onto Non-Volatile Memory
  • 1 Second to 18 Hour Sampling Interval (User Adjustable via Software)
  • 6-Year Factory Replaceable Battery
  • Requires Waterproof Data Shuttle or Optic USB Base Station and USB Cable. HOBOware Software Available as a Download
More Information
Starting Price: $129.00
HOBO Underwater Temperature Data Logger
HOBO Energy Logger
  • 15-Channel Modular Reconfigurable Data Logging System
  • Measure and Record Current, Voltage, Power, Pressure and more
  • Battery Operation or AC Power Available
  • 12 Volt Excitation for Sensors
  • Requires 1 FlexSmart Module, Sensors and HoboWare Pro Software
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Price: $364.00    Part Number: H22-001
HOBO Energy Logger
HOBO Pendant Loggers
  • Water resistant loggers for recording relative light levels and temperature
  • Available with 8k or 64k memory
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Starting At $49.00
HOBO Pendant Loggers
Pro V2 Weatherproof Indoor/Outdoor Data Loggers
  • Measure and Record Temperature and/or Humidity Readings in Wet, Condensing or Outdoor Environments.
  • 1 Second to 18 Hour Sampling Rate with Multiple Logging Intervals Available
  • Stores up to 42,000 Readings onto Internal Memory Before Download to Computer Needed
  • 3-Year User-Replaceable Battery
  • Requires Communications Device (Optic Base Station or Shuttle) and USB Cable
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Starting Price: $145.00
Pro V2 Weatherproof Indoor/Outdoor Data Loggers
Water Level Data Loggers
  • Measure and Log Water Level and Temperature
  • Available in Ranges from 0 to 13ft, 0 to 30ft, 0 to 100ft and 0 to 250ft
  • Stores up to 21,700 Water Level Pressure and Temperature Readings
  • Factory-Replaceable 2/3 AA Lithium Battery with 5 Year Life @ 1 Minute Logging Interval
  • No-Vent-Tube Design with Durable Ceramic Pressure Sensor
  • Requires HOBOware Pro Software and USB Optic Base Station or Waterproof Shuttle
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Starting Price: $495.00
Water Level Data Loggers
Onset HOBO Weather Stations
  • 4 and 15-Channel Weather Station with Weatherproof Enclosure for Harsh Environments
  • Measure Your Choice of up to 15 Separate Environmental Parameters using Onset Smart Sensors (Sold Separately)
  • 1 Year Battery Life using 4 AA Alkaline Batteries
  • Sensor Mounting Allow Users to Position the Weather Station and Sensors Optimally
  • 512K Memory Can Store Over 500,000 Measurements
  • Optional Analog and Pulse Inputs for 3rd-Party Sensors
  • Requires Smart Sensors and HOBOWare Pro Software
  • Compatible with SolarStream Wireless Data Transceiver
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Starting At $215.00
Onset HOBO Weather Stations
HOBO Tidbit Waterproof Temperature Data Logger
  • Internal Sensor Measuring and Recording Temperature
  • Waterproof up to 300 Meters (1000 feet)
  • -20°C to 70°C Temperature Measurement Range with ±0.20°C Accuracy at 25°C
  • Store 42,000 Measured Readings onto Non-Volatile Memory
  • 1 Second to 18 Hour Sampling Interval (User Adjustable via Software)
  • Requires Waterproof Data Shuttle or Optic USB Base Station and USB Cable. HOBOware Software Available as a Download
More Information
Starting Price: $133.00
HOBO Tidbit Waterproof Temperature Data Logger

Onset HOBO Temperature Data Loggers
Onset HOBO Temperature and Humidity Data Loggers
Onset HOBO Light Data Loggers

Software for HOBO Data Loggers

Accessories for HOBO Data Loggers

ISO/NIST Calibration Services

ISO/NIST Calibration Services are now available for most Onset HOBO Data Loggers.

HOBOWare Software Video Tutorials

How to Launch a HOBO Data Logger using HOBOware Pro Software

Check Out More HOBOWare Software Tutorials.