HOBO Temperature/Relative Humidity/Light/External Data Logger

Data Loggers

HOBO Temperature/Relative Humidity/Light/External Data Logger

  • Vendor:Onset

Availability: In Stock
Qty Price
Buy 1 $191.00 ea
Buy 10 $181.45 ea

HOBO data loggers require HOBOware software (USB interface cable included w/CD purchase) and a communications device. See compatible items below.


Measure temperature, relative humidity, light intensity, and more with the HOBO U12-012. With 12-bit resolution measurements, this data logger gathers a range of recorded data and stores 43,000 measurements.

Highlighted Features

  • 12-bit resolution provides high accuracy
  • Large memory for long-term deployments or fast sampling
  • Programmable and push button start
  • Direct USB interface for fast data offload
  • Compatible with Onsets HOBO U-Shuttle for convenient data transport
  • Compatible with HOBOware and HOBOware Pro for logger setup, graphing and analysis

In what environment does this data logger operate?

This data logger operates in an indoor environment.

What measurements does this data logger support?

The U12-012 data logger supports the following measurements: 4-20mA, AC Current, AC Voltage, Air Velocity, Carbon Dioxide, Compressed Air Flow, DC Current, DC Voltage, Gauge Pressure, Kilowatts (kW), Light Intensity, Relative Humidity, Temperature and Volatile Organic Comp.
Measurement Range
Temperature: -20° to 70°C (-4° to 158°F)
RH: 5% to 95% RH
Light intensity: 1 to 3000 footcandles (lumens/ft2) typical; maximum value varies from 1500 to 4500 footcandles (lumens/ft2)
Analog channels: to 2.5 Vdc (w/CABLE-2.5-STEREO); 0 to 5 Vdc (w/CABLE-ADAP5); 0 to 10 Vdc (w/ CABLE-ADAP10); 4-20 mA (w/CABLE-4-20MA)
Temperature: ±0.35°C from 0° to 50°C (±0.63°F from 32° to 122°F), see Plot A in manual
RH: ±2.5% from 10% to 90% RH (typical), to a maximum of ±3.5%, see Plot B in manual External input channel (see sensor manual): ± 2 mV ± 2.5% of absolute reading
Temperature: 0.03°C at 25°C (0.05°F at 77°F), see Plot A in manual
RH: 0.05% RH
Sample rate: 1 second to 18 hours, user selectable
Temperature: 0.1°C/year (0.2°F/year)
RH: < 1% per year typical; RH hysteresis 1%
Response time in airflow of 1 m/s (2.2 mph)
Temperature: 6 minutes, typical to 90%
RH: 1 minute, typical to 90%
Time accuracy: ±1 minute per month at 25°C (77°F), see Plot C
Operating temperature
Logging: -20° to 70°C (-4° to 158°F); 0 to 95% RH (non-condensing)
Launch/readout: 0° to 50°C (32° to 122°F), per USB specification
Battery life: 1 year typical use
Memory: 64K bytes (43,000 12-bit measurements)
Weight: 46 g (1.6 oz)
Dimensions: 58 x 74 x 22 mm (2.3 x 2.9 x 0.9 inches)
The CE Marking identifies this product as complying with all relevant directives in the European Union (EU).
Graphing & Analysis
  • BHW-PRO HOBOware Pro CD or USB Drive (USB Cable Included) Software 
  • BHW-PRO-DLD HOBOware Pro - Mac/Win (Download Only) Software 
4-20 mA AC Current
  • CTV-A 2-20 Amp split-core AC current Sensor 
  • CTV-B 5-50 Amp split-core AC current Sensor 
  • CTV-C 10-100 Amp split-core AC current Sensor 
  • CTV-D 20-200 Amp split-core AC current Sensor 
  • CTV-E 60 - 600 Amp split-core AC current Sensor
AC Voltage
  • T-CON-ACT-150 ConLab 0-150 Volt AC Transmitter Sensor 
  • T-CON-ACT-300 ConLab 0-300 Volt AC Transmitter Sensor
Air Velocity
  • T-DCI-F900-L-O Air Velocity (.15 to 5 m/s) (30 to 985 fpm) Sensor 
  • T-DCI-F900-L-P Air Velocity (0.15 to 10 m/s) (30 to 1969 fpm) Sensor 
  • T-DCI-F900-S-O Air Velocity (0.15 to 5 m/s) (30 to 985 fpm) Sensor 
  • T-DCI-F900-S-P Air Velocity Sensor (0.15 to 10 m/s) (30 to 1969 fpm) Sensor
Carbon Dioxide Compressed Air Flow DC Amperage DC Voltage (0-2.5v, 5v, 10v)
  • CABLE-2.5-STEREO 0 to 2.5 VoltsDC Voltage Input Sensor 
  • CABLE-ADAP10 0 to 10 VoltsDC Voltage Input Sensor 
  • CABLE-ADAP24 0 to 24 VoltsDC Voltage Input Sensor 
  • CABLE-ADAP5 0 to 5 VoltsDC Voltage Input Sensor
Differential Pressure
  • T-VER-PXU-L Differential Air Pressure Transducer Sensor 
  • T-VER-PXU-X Differential Air Pressure Transducer Sensor
Gauge Pressure
  • T-ASH-G2-100 Ashcroft (100-psig) Gauge Pressure Sensor 
  • T-ASH-G2-200 Ashcroft (200-psig) Gauge Pressure Sensor 
  • T-ASH-G2-500 Ashcroft (500-psig) Gauge Pressure Sensor
Power Temperature
  • TMC1-HD Air/Water/Soil Temperature (1' cable) Sensor 
  • TMC20-HD Air/Water/Soil Temperature (20' cable) Sensor 
  • TMC50-HD Air/Water/Soil Temperature (50' cable) Sensor 
  • TMC6-HC Stainless Steel Temperature Probe (6' cable) Sensor 
  • TMC6-HD Air/Water/Soil Temperature (6' cable) Sensor 
  • TMC6-HET emperature (6') Sensor
Volatile Organic Compound
  • T-ION-TVOC Volatile Organic Compound (VOC) Sensor
Communication Cables
Data Offload - Base Stations - Shuttles - Couplers MAINTENANCE
Carrying Case Compliance Certificates
  • COMPLIANCE CERT Compliance Certification 
  • NIST Setup & CertificationsNIST-RH Initial Purchase RH NIST Calibration Service Certification 
  • NIST-SETUP Setup Charge for NIST Traceable Certification
  • NIST-TEMP-POINT NIST Temperature point Certification
Protective Enclosures