HOBO State/Pulse/Event/Runtime Logger - eucatech Store
HOBO State/Pulse/Event/Runtime Logger - eucatech Store
HOBO State/Pulse/Event/Runtime Logger - eucatech Store


HOBO State/Pulse/Event/Runtime Logger

Sale priceR 3,727.36
SKU: UX90-001



Records state changes, electronic pulses, and mechanical or electrical contact closures from external sensing devices. Ideal for monitoring energy consumption, mechanical equipment operation, and water and gas flow.



Data Sheet
User Manual


Highlighted Features

  • One logger with four recording modes
  • The internal reed switch can be used to determine when a door or window is open or closed
  • Compatible with a wide range of external sensors
  • Ships with 2.5 mm input cable
  • Compatible with HOBOware and HOBOware Pro software for logger setup and graphing & analysis


Internal Sensor:

  • Maximum State, Event, Runtime Frequency: 1 Hz
  • Preferred Switch State: No magnet present (normally open)

External Input:

  • External Contact Input: Electronic solid-state switch closure or logic-driven voltage output
  • Range: 0 to 3 V DC (USB powered), 0 to 2.5 V DC (battery powered)
  • Maximum Pulse Frequency: 50 Hz
  • Maximum State, Event, Runtime Frequency: 1 Hz
  • Pulse, Event Lockout Time: 0 to 1 second in 100 ms steps
  • Solid State Switch Closure:
    • Input Low: < 10 KΩ
    • Input High: > 500 KΩ
  • Internal Weak Pull-Up: 100 KΩ
  • Input Impedance: Solid-state switch closure: 100 KΩ pull-up


  • Resolution: Pulse: 1 pulse, Runtime: 1 second, State and Event: 1 State or Event
  • Logging Rate: 1 second to 18 hours, 12 minutes, 15 seconds
  • Memory Modes: Wrap when full or stop when full
  • Start Modes: Immediate, push button, date & time, or next interval
  • Stop Modes: When the memory is full, push the button, or date & time
  • Time Accuracy: ±1 minute per month at 25°C (77°F) (see Plot A)

Power Source:

  • One 3V CR2032 lithium battery and USB cable
  • Battery Life: 1 year, typical with logging intervals greater than 1 minute and normally open contacts


  • UX90-001: 128 KB (84,650 measurements, maximum)
  • UX90-001M: 512 KB (346,795 measurements, maximum)

Download Type:

  • USB 2.0 interface
  • Full Memory Download Time: 10 seconds for 128 KB; 30 seconds for 512 KB

Logger Operating Range:

  • 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


  • LCD is visible from: 0° to 50°C (32° to 122°F); the LCD may react slowly or go blank in temperatures outside this range


  • 3.66 x 5.94 x 1.52 cm
  • 1.44 x 2.34 x 0.6 in.

    Environmental Rating:

    • IP50


    In what environment does this data logger operate?

    This data logger operates in an indoor environment.

    What measurements does this data logger support?

    The UX90-001 data logger supports the following measurements: Event, Kilowatt Hours (kWh), Motor On/Off, Pulse Input, Runtime, State Open/Closed, and Water Flow