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Control Resources Incorporated

Control Resources Incorporated

For Engineers, by Engineers. Since 1984.

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1-978-486-4160 | sales@controlres.com
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    • AC Fan Controls | SmartFan®
    • DC Fan Controls | SmartFan®
    • Custom Fan Controls
    • Fan Failure Alarms
    • Fan Tray Assembly and Design with Integrated SmartFan® Controls
    • LabStrobe™ Stroboscope
    • Motor Drives & Controls
    • Navigator Hand-Held Programmer
    • Temperature Sensors for SmartFan® Controls
    • VFDs (Variable Frequency Drives)
  • Design ServicesExpand
    • Overview
    • Boiler Control
    • Custom Brushless DC
    • Custom Fan Controls
    • Irrigation Control
    • LED Controls
    • AC Motor Controls
    • Custom VFDs
  • Cooling System Design HelpExpand
    • Fan Controller Technology and Motor Efficiency
    • AC Motor Compatibility
    • Adaptive Cooling
    • ATCA (Advanced Telecom Computing Architecture)
    • Cooling Design Tips
    • Custom Fan Controls
    • I2C Communications
    • SmartFan® Installation Tips
    • SmartFan Applications
    • Temperature Conversion Chart
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Control Resources Incorporated
Control Resources Incorporated
For Engineers, by Engineers. Since 1984.
News & Announcements

CRI Adds Nimbus II Triac AC Fan Speed Controller

We are very excited to introduce the Nimbus II, our 5th generation TRIAC speed controller for AC fans and motors rated up to 7 Amps.  We have taken the best parts of our top selling Nimbus fan controller line and have added digital programming with 12 variable menus, 10X improvement in control loop response, compatibility with temp. sensors with tighter tolerance at lower cost, EMI filtering, an enclosure option and more.  The Nimbus II will be available for sale by March 1st 2018, contact sales@controlres.com or call 978 486 4160 for more details.

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For Engineers, By Engineers

Proudly Made in the USA

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SmartFan® AC Fan Controls
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Fan Failure Alarms
LabStrobe™ Stroboscope
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Contact Information

We’ve Moved!
Please update your records with our new Address:
43 Nagog Park
Suite 110
Acton, MA 01720 USA

Tel:  1-978-486-4160
Fax: 1-978-486-4772

Email: sales@controlres.com
Hours: Monday – Friday, 8 am – 5 pm ET

© 2026 by Control Resources Inc. • Littleton, MA • 1-978-486-4160.  All Rights Reserved. Website Design by InterActive Synergy, LLC

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Generic selectors
Exact matches only
Search in title
Search in content
Post Type Selectors

  • Home
  • Product Line
    • AC Fan Controls | SmartFan®
    • DC Fan Controls | SmartFan®
    • Custom Fan Controls
    • Fan Failure Alarms
    • Fan Tray Assembly and Design with Integrated SmartFan® Controls
    • LabStrobe™ Stroboscope
    • Motor Drives & Controls
    • Navigator Hand-Held Programmer
    • Temperature Sensors for SmartFan® Controls
    • VFDs (Variable Frequency Drives)
  • Design Services
    • Overview
    • Boiler Control
    • Custom Brushless DC
    • Custom Fan Controls
    • Irrigation Control
    • LED Controls
    • AC Motor Controls
    • Custom VFDs
  • Cooling System Design Help
    • Fan Controller Technology and Motor Efficiency
    • AC Motor Compatibility
    • Adaptive Cooling
    • ATCA (Advanced Telecom Computing Architecture)
    • Cooling Design Tips
    • Custom Fan Controls
    • I2C Communications
    • SmartFan® Installation Tips
    • SmartFan Applications
    • Temperature Conversion Chart
  • Ordering & Warranty
    • Pricing
    • Ordering Information
    • Warranty & Returns
  • News & Info
    • About CRI
    • News & Announcements
    • Customer List
    • Compliance Documentation
  • Contact Us