HOBO 3 State/1 Event Data Logger

Part # U11-001
This product is discontinued.


The HOBO U11 3-State/1-Event Data Logger lets you simultaneously monitor and log state changes in up to three locations plus one time/date-stamped event. The three state and one event channels monitor contact closures or openings driven by external sensors mounted on motors, doors, or other cycling equipment.

Highlighted Features

  • External sensor cable included (CABLE-2.5-STEREO)
  • Optional AC Current Switch (CSV-A8) to measure Motor on/off
  • Records up to 43,000 state changes or events
  • Four input cables
  • Includes mounting kit with magnet, hook and loop tape, tie-wrap mount, tie wrap, and two screws

In what environment does this data logger operate?

This data logger operates in an indoor environment.

What measurements does this data logger support?

The U11-001 data logger supports the following measurements: Event, Motor On/Off and State Open/Closed

The country of origin for this product is the United States. To see the full specifications for this product, please see our product manual found under the documentation tab if available.

State and Event Channels: External contact input: Passive relay switch or contact closure - minimum duration 1 second (open > 300 KΩ or closed < 10 KΩ)

U11 Timebase Error Plot Max total cable run: 32 m (105 ft); if using only state channels, 64 m (210 ft)

Time accuracy: Approximately ± 1 minute per month at 25°C (77°F), see Plot A

Operating temperature:
Logging: -20° to 70°C (-4° to 158°F)
Launch/readout: 0° to 50°C (32° to 122°F), per USB specification

Humidity range: 0 to 95% RH, non-condensing

Battery life: 1 year typical use with normally open contacts; two months if all four channels are logging with continuously closed contacts

Memory: 64K bytes (up to 43,000 state changes or events)

Weight: 50 g (1.8 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).

Documentation for the U11-001

The following are associated resources for this product. In general users of this product can gain insight into its possible use by utilizing the resources below.