• Analog channels: 0 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)
  • Accuracy (logger only):
    • ±2 mV ±2.5% of absolute reading
    • ±2 mV ±1% of reading for data logger-powered sensors
  • Resolution: 0.6mV
  • Sample Rate: 1 second to 18 hours, user selectable
  • Time accuracy: ±1 minute per month
  • Battery life: 1 year typical use
  • Memory: 64K bytes (43,000 12-bit measurements)
  • Weatherproof case tested to NEMA 6 standard
  • 12-bit resolution provides high accuracy
  • Programmable and push-button start
  • Direct USB interface for fast data offload
  • Compatible with Onset’s HOBO U-Shuttle for convenient data transport
  • Compatible with HOBOware and HOBOware Pro for logger setup, graphing and analysis
  • Dimensions: 140 x 137 x 32 mm (5.5 x 5.38 x 1.25 inches), weighs just 7 ounces

What's in the Box

  • Desiccant pack
  • Mounting/spare parts kit: two socket head screws, dome plug and O-ring, O-ring lubricant, four mounting screws, four flat washers, Allen wrench, and four tie wraps


The HOBO U12-008 data logger is a 4-channel logger with a weatherproof case tested to NEMA 6 standards making it flexible enough to deploy inside or outdoors. The U12-008 logger uses a direct USB interface for launching and data readout by a computer. Onset software is required for logger operation.

The HOBO U12-008 data logger has a 12-bit resolution and can record up to 43,000 measurements or events. The four external channels accept a wide range of Onset and third-party sensors/transducers with a 0-2.5 VDC output, including external temperature, AC current, pressure, air velocity, and kW sensors.






Here's how some of our customers use this product...

Datalogging in Industrial Conditions

The Background: Our customer is an industrial facility that needs to data log several points on a machine controlled by a PLC.

The Problem: The solution must interface cleanly into the PLC as the customer does not want to rewrite the program.

The Solution: We suggested the HOBO U12-008 data logger, a 4-channel logger that can connect easily to the PLCs additional 0-5v outputs. This allows easy access to the data from the machine without any additional programming or hassle.