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Data Loggers
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 We are supplying data loggers for University of Kentucky's $25 Million Energy Efficiency Retrofit!  Click here for details.

The Data Logger Monitoring System

Sensor Switch, the industry leader in lighting control innovation, presents the Data Logger Monitoring System for modeling facility and occupancy patterns.  Primarily used to quantify potential energy savings from occupancy sensor projects, this powerful tool is essential for performance contractors, lighting retrofitters and facility managers when calculating Return on Investment (ROI) and payback estimates.

System Highlights
  • Data Logger units record activity of a building's lighting, as well as its occupants
  • Data Logger software analyzes information and generates customized reports
  • Data is presented in "Lights On vs. Occupancy" timeline
  • Customized reports quantify potential energy savings from occupancy sensor projects
  • Use of system is provided to qualified customers at no charge


Device Features

While light monitors have been around for years, the Sensor Switch Data Logger surpasses all predecessors with several new easy-to-use features that assure more useful results.

  • Combination occupancy sensor & light monitoring device
  • Distinguishes between natural and artificial light sources
  • Multiple loggers can be used together to monitor large spaces
  • Installs in seconds; push-button operation
  • Data points are recorded every two minutes


Energy Savings Analysis

The Data Logger's information is downloaded into sophisticated software that analyzes the data and generates customized reports.

  • Each Data Logger is assigned an Area Type
  • Software averages information from Data Loggers of similar Area Types
  • "Lights On vs. Occupancy" activity per area presented in 24 hour timelines
  • Total energy usage calculated from user-entered lighting loads
  • User-adjustable "virtual" occupancy sensor time delay settings
  • Analysis of "Savings vs. Time Delay Setting" on sensors






Onset offers a wide range of USB-based stand-alone data loggers for indoor applications. Well suited for rapid deployment, our battery-powered data loggers and weather stations are used to measure a wide range of parameters including temperature, wind, humidity, and many others.
Product Features Measurements
HOBO U10 Data Loggers

  • Compact Size
  • Low cost for multiple
    monitoring locations
  • Internal sensors for
    easy deployment
Temperature, Relative Humidity 
HOBO U12 Data Loggers 

  • High accuracy measurements
  • Six models available
  • Large memory for
    long-term deployments 
AC Current Temperature, DC Voltage, 4-20mA, AC Voltage, Air Velocity, Carbon Dioxide, Compressed Air Flow, DC Current, Kilowatts, Pressure, Gauge, VOC 
HOBO U12 Stainless 
  • Ideal for food, pharmaceutical, autoclave, where high- accuracy temperature data is critical.
  • 2 models available
  • Large memory for
    long-term deployments 
HOBO U14 LCD Data Loggers
  • Easily view temperature/humidity levels while logging data
  • Get notified when conditions
    exceed set limits
  • Stores over 43,000
Temperature, Relative Humidity
HOBO U9 Data Loggers 
  • Four models available 
  • Stores 43,000 measurements
  • Low cost
State, Light On/Off, Motor On/Off 
HOBO Energy Logger multi-channel data logger 
  • Flexible power options
  • Compact and low cost
  • Innovative, snap-in
    FlexSmart signal
    conditioning modules 
Temperature, Relative Humidity, True RMS,
AC Current/Voltage, kW, kWh,Gauge Pressure,
Pulse, Differential Air Pressure, DC Amperage,
4-20 mA, 0-2.5 VDC, Carbon Dioxide, Air Velocity, 
Water Flow, Compressed Air Flow, VOC 
HOBO ZW Series Wireless Monitoring System
  • Provides centralized building performance data collection
  • Transmission of real-time data within a self-healing mesh network
  • Provides powerful software for organizing and viewing data 
Temperature, Relative Humidity, CO2, AC Voltage,
AC Current, DC Voltage, Water Flow,
Compressed Airflow, Pulse, 4-20 mA 
HOBO U30 Remote Monitoring Systems
  • Internet access to
    real-time data
  • Get notified of problems
    via cell phone or email
  • Four models available 
Temperature, Relative Humidity, kW, kWh, Gauge Pressure, Differential Air Pressure, CO2, AC Voltage, AC Amps, DC Amps, DC Voltage Input, 4-20 mA input, Air Velocity, Water Flow, Compressed Air Flow, VOC 
HOBO Energy Measurement and Verification System
  • Single-phase and
    three-phase models
  • Provides pre-wired sensors
    for quick and easy set up
  • Weatherproof enclosure for monitoring in harsh
kW, kWh 
HOBO Thermocouple Logger
  • High- accuracy
    thermocouple recordings
  • Automatic cold
    junction compensation
  • Accepts industry- standard subminiature thermocouple connectors
Wide range of temperature measurements