HOBO Data Loggers by Onset
Based on Cape Cod, Massachusetts, Onset has sold more than 2.5 million data loggers since the company’s founding in 1981. Onset has designed and manufactured its HOBO data loggers on-site at its headquarters on Cape Cod, Massachusetts for more than 30 years. read more
Onset is a world leader in data loggers. Their HOBO data logger and weather station products are used around the world in a broad range of monitoring applications, from verifying the performance of green buildings and renewable energy systems to agricultural and coastal research.
Available Products by HOBO Data Loggers by Onset
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Measures barometric pressure, leaf wetness, light intensity, rainfall, relative humidity, soil moisture, temperature, and wind
Starting at
$1,999.00
Measures and transmits temperature data wirelessly to mobile devices via Bluetooth Low Energy (BLE) technology.
$45.00
In Stock
Bluetooth Smart-enabled data logger is designed for wireless communication with Apple or Android mobile devices
$135.00
In Stock
Waterproof to 300 meters (1,000 feet), durable logger for measuring water temperature, 12-bit resolution, ±0.2°C accuracy
$133.00
Cloud-based, 15-channel, multi-parameter data logger with plug-and-play convenience
Fully web-configurable indoor data logger with built-in web server & 30 sensor inputs, allows data to be retrieved locally or remotely
$850.00
In Stock
Analog, thermocouple and pulse data logger options, high performance and high accuracy 4-channel data loggers
Temperature & humidity models available, 84,650 measurements, 1 second to 18 hours sampling rates
Multi-channel energy and environmental monitoring, records up to 4-channels, 43,000 measurements
Fully web-configurable indoor data logger with built-in web server & 15 sensor inputs, stores up to 64 data points
$499.00
In Stock
Rugged data logging weather station with out-of-the-box convenience
$1,459.00
Water Level, barometric pressure, pressure (absolute), temperature measurements, used in wide range of environmental applications
Bluetooth low energy-enabled loggers designed for wireless communication with a mobile device, weatherproof housing
Weatherproof data logger for multi-channel monitoring of microclimates, accepts up to five plug-and-play Smart Sensors
$220.00
In Stock
Fast reliable measurements of state, pulse, event, runtime, light on/off, motor on/off, occupancy/light
Water level data logger offers convenient wireless setup and download from mobile devices via Bluetooth Low Energy technology
Starting at
$595.00
Water level, pressure & temperature, ideal for wells, streams, lakes, and freshwater wetlands
Kit includes: U20-001-01 HOBO data logger (13', 30', 100' ranges available), BASE-U-4 Base Station and HOBOware Pro Software
Starting at
$604.00
Waterproof to 120 meters (400 feet), durable streamlined case for extended deployment in fresh or salt water
$129.00
Long-term monitoring of pH in both freshwater and saltwater environments
$695.00
Bluetooth Smart enabled data logger stores and wirelessly transmits CO2, temperature and humidity readings
$595.00
In Stock
4-Channel external data logger can employ multiple energy and environmental sensors, ranging from amps to temperature
$249.00
Economical, weatherproof, and waterproof temperature data loggers designed for a variety of short and long term monitoring applications
Starting at
$42.00
Wirelessly monitor and transmit real-time building performance data, scales up to a network of 100 nodes
Starting at
$186.00
Records up to 15 channels, 512K nonvolatile flash data storage, for energy and industrial monitoring applications
$364.00
Non-contact capacitive sensor, conductivity monitoring for freshwater and stable saltwater applications
Starting at
$750.00
Measures power and energy consumption of 120V office equipment plug loads, 0.5% accuracy
$239.00
In Stock
Bluetooth low energy-enabled loggers designed for wireless communication with a mobile device, waterproof 100ft up to 5,000ft
Weatherproof loggers for outdoor temperature and humidity measurements, high-accuracy measurements
Starting at
$145.00
Food-grade 316 Series stainless Steel, 43,000 measurements, -40 to 257°F (-40 to 125°C) temp range
Starting at
$272.00
Indoor single channel thermocouple data logger, types J, K, T, E, R, S, B, or N with temperature ranges from -436 to 3,308°F
$139.00
In Stock
Display, record, and get notified of temperature and humidity conditions, 43,000 measurements
Starting at
$186.00
Rainfall and temperature measurements, aluminum housing and 15.4 cm (6.06 in) collector ring
Starting at
$420.00
Measurements of tilt, acceleration and motion, waterproof housing for wet or underwater use
$83.00
Up to 100ft level depth, 13ft for barometric pressure, and temperatures from -4 to 122°F
Starting at
$1,137.00
Measures temperature, events and rainfall, event-based data storage provides detailed data and efficient memory usage
$105.00
Measure either air pressure or velocity, unidirectional or bidirectional, switch selectable
$240.00
Highly accurate split-core current transformer designed for single handed operation
Starting at
$45.00
HOBOnet sensor includes wireless mesh self-healing technology, and withstands extended use in high-humidity environments
$249.00
In Stock
HOBOnet wireless sensor provides average wind speed, highest 3-second wind gust, and average wind direction
$389.00
Plot or export data to spreadsheets, time saving tools to fast setup, readout and export, compatible with all HOBO data loggers
$99.00
In Stock
Compact, no-lead water flow meter sensor that measures cold and hot water flow rates, with 59 inch cable length
$207.00
Adds the ability for users to be able to measure compressed air flow (SCFM), fits 1 inch or 2 inch steel pipes
Starting at
$495.00
HOBOnet sensor measures in 0.01in increments, and includes bird spikes and locking debris screen to minimize interference
$279.00
0.2 mm Rainfall (2m cable) Smart Sensor, measures rainfall rates up to 12.7 cm per hour
$410.00
Measures temperature in air, water, or soil, 1 ft, 6 ft, 20 ft and 50 ft lengths available
Starting at
$35.00
Used to offload data from any HOBO data logger with an Optic USB interface, splash resistant
$124.00
In Stock
5 Watt and 15 Watt solar panels work with the RX3000 and the U30-NRC, reduce system costs
Starting at
$79.00
Split-core AC Current Sensor, measures as low as 2 amps and as high as 600 amps
Starting at
$95.00
HOBOnet high-accuracy sensor with stainless steel tip rated for immersion in water or soil up to 122°F for up to 1 year
$189.00
In Stock
Connects the R.M. Young Wind Monitor-AQ Sensor (model 05305) with Onset's line of research-grade weather stations
$150.00
RX3000 remote monitors require a data plan selection in order to function
Starting at
$0.00
Set includes research-grade plug-and-play Wind Speed Smart Sensor and the Wind Direction Smart Sensor
$560.00
Measures volatile organic compounds with TVOC sensor, selectable measuring ranges of 10, 100 and 1000 ppm
$3,999.00
Plated copper temperature sensor probe that can be mounted to a pipe or flat surface
$39.00
In Stock
Compatible with all HOBO U-Series loggers with optic USB, waterproof up to 20m (66ft), requires HOBOware Pro software
$249.00
0.01" Rain Gauge (2m cable) Smart Sensor, measures rainfall rates up to five inches per hour
$410.00
Split-core CT sensor with multiple current ratings, overvoltage protection circuit & hinged body is easy to install in tight spaces
HOBOnet sensor measures in 0.2mm increments, and includes bird spikes and locking debris screen to minimize interference
$279.00
12" (30cm) stainless steel probe, 3/16” (0.5cm) in diameter, 32 to 1650°F (0 to 900°C) measuring range
$47.00
Fast optical infrared (IR) communication for easy logger launch and readout of HOBO Pendant loggers
$70.00
For connecting a sensor with a 4-20mA output to a HOBO U12, UX120, or ZW series external-channel data logger
$25.00
In Stock
Measures up to 200 Amps of DC current in both flow directions, adjustable span range
$245.00
HOBOnet silicon pyranometer sensor is calibrated to measure light intensity for frequencies relevant for solar radiation
$299.00
Sensor uses a high-frequency (70 MHz) circuit that provides good accuracy even in high-salinity and sandy soils.
$139.00
Solar Radiation (Silicon Pyranometer) Sensor, measurement range: 0 to 1280 W/m²
$210.00
HOBOnet sensor measures a 1-liter volume of soil and transmits data within a self-healing mesh network for greater reliability and range
$249.00
6 feet in length, type J, K or T thermocouples,
Starting at
$19.00
Interfaces with any sensor providing a 4-20 mA signal to connect to smart sensor compatible data loggers
$85.00
In Stock
True RMS up to the 21st harmonic 60 Hz, One to three phase AC system
$625.00
Measures 1, 2, or 3 phases in 2, 3, or 4 wire configurations
$229.00
Reads out data from systems in the field for transfer to a host computer, preserves data in nonvolatile memory
$281.00
The HOUSING-U2X Housing is for use in Underwater environments
$46.00
Collects incoming logged sensor data from HOBO data nodes and transfers the data to the computer via USB cable
$219.00
Keyspan USB-to-serial adaptor for use with all RS-232 serial devices and a PC 3.5 Interface cable for PC computers
$59.00
Temp, and water temp measurements, stainless steel sensor tip and robust cable, 2m, 6m and 17m length options
Starting at
$95.00
Includes four analog inputs that support excitation power, scaling, and statistics measurements
$120.00
In Stock
Flexible self powered rope CT designed to be used where regular split core CTs cannot fit
Measurement range: 0 (dry) to 100% (wet), capacitive grid sensor type
$132.00
External input cable with 13mm (0.5") tinned braided wire leads, 1.8 m (6 foot) long cable
$10.00
Compliance certificate states that the individual data logger is in compliance with its specification as described in its product manual
$25.00
Allows for up to three individual relays to be activated or pulsed in response to alarms
$120.00
In Stock
Self-powered transformer for monitoring sine wave, single-phase AC voltage. 150 anf 300 volts RMS range options
Starting at
$139.00
Barometric Pressure Smart Sensor for use with the RX3000 Remote Monitoring Station Data Logger
$249.00
Three 100 amp split core current transformers, 480 Volts AC rms input voltage
$845.00
Provide analog sensor inputs of 0 to 5, 10 or 24 VDC, 1.9 m (6.3 ft) long cable
Measure run-time (time-of-use) of equipment when combined with compatible HOBO data logger
$89.00
Module and mote for installation in a RX3000 station, and designed to work with HOBOnet wireless sensor network
$149.00
In Stock
Connects the R.M. Young Marine Wind Monitor Sensor (model 05106) with Onset's line of research-grade weather stations
$150.00
Reads out data from systems in the field for transfer to a host computer
$281.00
Split-core design for fast, easy installation, measures up to 75A, output 0.333 Volt AC at rated current
Starting at
$35.00
Accu-CT revenue-grade, split-core current transformer, 20, 50, 100 and 250 A range options, one-handed opening and closing mechanism
Starting at
$45.00
Full cross arm mounting of two wind sensors for use with Onset tripods or masts
$72.00
Measures up to 3 separate branch circuits simultaneously, accurate measurement of multiple single phase or each phase of 3-phase configurations
$249.00
HOBOnet sensor measures photosynthetically active radiation (PAR) and light intensity for frequencies relevant to photosynthesis
$309.00
Split-core design for fast, easy installation, up to 600A measurements, accuracy at 10% to 130% of rated current
Starting at
$55.00
HOBOnet repeater ideal for use for obstructions between network motes and the station, or to extend transmission range of motes
$129.00
In Stock
Measures a large 1-liter volume of soil, providing a more accurate picture of average soil moisture
$139.00
Routes data from networked HOBO data logger to ensure the data is transmitted back to the receiver
$175.00
HOBOnet sensor with range of 1,500 to 2,000ft, wireless mesh self-healing technology, and up to 50 wireless sensors per network
$249.00
Research-grade plug-and-play sensor for measuring and logging wind direction data
$350.00
Male-to-male extender cable, plus a female-to-female adaptor
Starting at
$20.00
The Calibration Kit includes pH 4.01, pH 7.00, pH 10.00 buffer solutions (475 mL bottles), and the 4 oz. calibration beaker
$45.00
Digital filtering improves measurement accuracy with 32 readings/sample, 12-bit resolution
$79.00
In Stock
Measure wind speed from 0 to 76 m/s (0 to 170 mph), sensor survives through 170 mph
$239.00
Measures 1, 2, or 3 phases in 2, 3, or 4 wire configurations, pulse output, use with wide variety of CT's
Starting at
$269.00
Anti-Biofouling Copper Guard can be used in addition to the standard electrode guard
$20.00
Connects sensors with pulse outputs to loggers with smart-sensor inputs
Replacement dissolved oxygen sensor cap that has a 2-year shelf life and 6-month deployment life
$85.00
300 or 800 amp sensors, split-core installation eliminates the need to remove conductors, accurate electronic pulse output
Measures True RMS for accurate readings of sinusoidal and non-sinusoidal waveforms, ranges of 150, 300, 600 Volts AC
Starting at
$79.00
Photosynthetically Active Radiation (PAR) Smart Sensor, designed to detect photons between 400-700 nm in wave length
$220.00
4 oz calibration beaker can be used to calibrate the HOBO MX pH Logger and to store calibration solutions.
$4.00
External Input Cable to Measure DC Voltage: For 0-5 Vdc Max.
$12.00
pH 4.01, 7.00, and 10.00 Calibration Solutions (475 mL bottles) are used to calibrate the pH electrode in the HOBO MX pH Logger.
Starting at
$14.00
6.5-inch long, xenoy weatherproof housing that protects the connection between sensors and sensor extension cables
$30.00
Used to properly store and condition the pH electrode that is used with the HOBO MX pH Logger
$45.00
The Maintenance Kit includes the Calibration Kit (MX2500-CAL-KIT) and Storage Solution (MX2500-STORE-SOLN)
$65.00
Connects sensors with pulse outputs to loggers with smart-sensor inputs, compatible with contact closures
Starting at
$74.00
2 input channels of 0 to 20mA and/or 0 to 20 VDC, provides 12V sensor excitation and user-configurable warm-up
$89.00
Connects top end of waterl level data loggers to the sensor end to form a complete system
Starting at
$90.00
Replaces standard protective guard & uses copper windings to reduce bio-fouling while still allowing good water flow to the sensor
$95.00
Replaces the original sensor end cap that ships with the HOBO MX pH Logger
$95.00
Replacement pH electrode, suited for environmental monitoring of streams, lakes, rivers, estuaries, and oceans
$115.00