Reliable and Accurate

Onset manufactures a wide variety of HOBO® data loggers to fit into any budget. Models can record temperature and other parameters such as humidity, light, building-performance and other parameters.

These models are compact and durable for installation in many different settings. Some models utilize an internal sensor, while we also offer an analog model for flexible connection with external sensors. For ease of use, these products all operate using the same software, convenient when monitoring more than one value.

Onset HOBO Onset HOBO Data Loggers

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Onset HOBO MX1101 temperature and humidity data logger

MX1101

MX1101 Temperature and Relative Humidity Data Logger


  • Wireless communication via Bluetooth Smart Technology
  • Easy to deploy and offload using free HOBOmobile App
  • Visual and audible high & low alarm thresholds
  • Stores 84,000 measurements
  • Accuracy: +/- 0.2C and +/- 2%RH
  • Find me/pager feature

Prices starting at $135


Onset HOBO UX100-001 Temperature Data Logger

UX100-001

UX100-001 Temperature Data Logger


  • Easy-to view LCD display
  • Large memory capacity
  • Visual high & low alarm thresholds
  • New Burst and Statistics logging modes
  • Software for logger setup, graphing and analysis

Prices starting at $75


Onset HOBO UX100-003 Temperature and Humidity Data Logger

UX100-003

UX100-003 Temperature and Humidity Data Logger


  • Easy-to view LCD display
  • Large memory capacity
  • Visual high & low alarm thresholds
  • New Burst and Statistics logging modes
  • User-replaceable Relative Humidity sensor
  • Software for logger setup, graphing and analysis

Prices starting at $89


Onset HOBO UX100-011 temperture and humidity data logger

UX100-011

UX100-011 Temperature and Humidity Data Logger


  • Temperature Range -20 to 70C (-4 to 158F)
  • Humidity Range: 1% to 95%
  • Easy-to view LCD display
  • Large memory capacity
  • Visual high & low alarm thresholds

Prices starting at $125


Onset HOBO UX120-006m 4 Channel Analog data logger

UX120-006M

UX120-006M Analog Data Logger


  • Twice the accuracy over previous models with 16-bit resolution
  • Flexible support for a wide range of external sensors
  • LCD confirms logger operation and displays near real-time measurement data
  • Provides minimum, maximum, average and standard deviation logging options
  • On-screen alarms notify you when a sensor reading exceeds set thresholds

Prices starting at $139


Onset HOBO UX120-014M Thermocouple data logger

UX120-014M

UX120-014M Thermocouple Data Logger


  • Easy-to-view LCD display confirms logger operation and battery status
  • Near real-time readout of current temperatures as well as minimum, maximum, average and standard deviation statistics
  • On-screen alarms notify you if temperatures exceed high or low thresholds
  • Large memory capacity capable of storing 1.6 million measurements
  • Start, stop, and restart push buttons
  • User upgradeable firmware
  • Optional protective case enables logger use in outdoor environments
  • Compatible with HOBOware and HOBOware Pro software for logger setup, graphing and analysis

Prices starting at $275


Onset HOBO UX120-018 Plug load data logger

UX120-018

UX120-018 Plug Load Data Logger


  • 0.5% measurement accuracy enables more reliable plug load energy data
  • "Meter Mode" provides instant viewing of real-time plug load variables
  • Provides time-stamped and totalized load data for detailed energy analysis
  • Large memory enables faster logging intervals for more comprehensive plug load profiles
  • Battery back-up ensures logged data remains intact in the event of a power outage or load failure

Prices starting at $239


Onset HOBO MX1102 Carbon Dioxide Data Logger

MX1102

MX1102 Carbon Dioxide Data Logger


  • Measures Temperature, RH and CO2
  • Wireless communication via Bluetooth Smart Technology
  • Six month battery life at 5-minute CO2 logging rate
  • Easy to deploy and offload using free HOBOmobile App
  • Visual and audible high & low alarm thresholds
  • Self-calibrating CO2 sensor technology ensures optimal accuracy at lower maintenance costs

Prices starting at $595


Onset HOBO MX2001 Bluetooth Water Level Data Logger

MX2001

MX2001 Bluetooth Water Level Data Logger


  • Wireless data offload to mobile devices using Bluetooth Low Energy
  • Direct read cable connects sensor to top-end logger/transmitter
  • Integrated barometric pressure sensor enables direct water level readout
  • Reference water level can be entered at the start of the deployment
  • Use HOBOmobile on iOS devices for setup, data viewing and data sharing

UX90-006M Room Occupancy and Light Data Logger

UX90-006M

UX90-006M Room Occupancy and Light Data Logger


  • Measures room occupancy up to 12 meters away
  • Auto-calibration of ON and OFF thresholds ensures reliable readings
  • LCD screen displays signal strength, enabling proper logger placement
  • Highly recommended light pipe accessory eliminates effects of ambient light to ensure the most accurate readings
  • Compatible with HOBOware and HOBOware Pro software for logger setup, graphing and analysis

Onset HOBO RX3000 Remote Monitoring Station Data Logger

RX3000

RX3000 Remote Monitoring Station Data Logger


  • Flexible support for a broad range of sensors
  • LCD display for easy field deployment
  • Cloud-based data access through HOBOlink
  • Plug-and-play operation
  • Alarm notifications via text, email
  • Rugged double-weatherproof enclosure
  • Cellular, Wifi and Ethernet Option are available
  • Optional Analog Input and Relay Modules

UX90-005M Room Occupancy and Light Data Logger

UX90-005M

UX90-005M Room Occupancy and Light Data Logger


  • Measures room occupancy up to 5 meters away
  • Auto-calibration of ON and OFF thresholds ensures reliable readings
  • LCD screen displays signal strength, enabling proper logger placement
  • Highly recommended light pipe accessory eliminates effects of ambient light to ensure the most accurate readings
  • Compatible with HOBOware and HOBOware Pro software for logger setup, graphing and analysis

Onset HOBO UX90-001M State Pulse Event Data Logger

UX90-001M

UX90-001M State Pulse Event Logger


  • Four recording modes
  • Internal reed switch to monitor open/close
  • Compatible with wide range of external sensors
  • Supports Event, kWh, Motor On/Off, Pulse Input, Runtime, State Open/Closed and Water Flow

Prices starting at $121


Onset HOBO UX100-014M single channel Thermocouple data logger

UX100-014M

UX100-014M Thermocouple Data Logger


  • High-accuracy J, K, T, E, R, S, B, N thermocouple readings
  • Easy-to view LCD display
  • Large memory capacity
  • Visual high & low alarm thresholds
  • New Burst and Statistics logging modes
  • Record ambient temperature with internal thermistor

Prices starting at $139


Onset HOBO UX90-002M Light On Off Data Logger

UX90-002M

UX90-002M Light On Off Logger


  • Auto-calibration of ON and OFF thresholds ensures reliable readings
  • User adjustable sensitivity control for low/high light level conditions

Prices starting at $121


Onset HOBO UX120-017M Pulse Data Logger

UX120-017M

UX120-017M Pulse Data Logger


  • Simultaneously measures and records pulse signals, events, state changes, and runtimes
  • Stores up to over 4 million measurements, enabling longer deployments with fewer site visits
  • Maximum pulse rate 120 Hz
  • Pulse input range 0 to 24VDC
  • Streamlines deployment via a range of start/stop options, logger status LEDs, and high-speed USB 2.0 data offload

Prices starting at $325


Onset HOBO UX90 Motor On Off Logger

UX90-004M

UX90-004M Motor On Off Data Logger


  • Dual internal motor sensors gives better sensitivity for well-shielded motors
  • External input for measuring mechanical contact closures when signal strength is low
  • Auto-calibration of ON and OFF thresholds ensures reliable readings
  • Compatible with HOBOware and HOBOware Pro software for logger setup, graphing and analysis

Prices starting at $121


Onset HOBO U-Shuttle-U-DT-1 Data Transporter

U-DT-1

U-Shuttle Data Transporter


  • Reads out data from loggers in the field for transfer to a host computer
  • Optionally relaunches the logger
  • Preserves data in nonvolatile memory
  • Displays logger status, including memory, battery level, and sensor readings for some sensors
  • Displays its own status, including clock, memory, and battery level
  • Lets you change the batteries in the field without resetting the clock
  • Allows you to test individual smart sensors

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