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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
  • Home
  • Product LineExpand
    • 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
  • Ordering & WarrantyExpand
    • Pricing
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    • About CRI
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Control Resources Incorporated
Control Resources Incorporated
For Engineers, by Engineers. Since 1984.
News & Announcements

SmartFan® Multi SD DC Fan Controller, NOW FIELD PROGRAMMABLE

Control Resources is pleased to announce that the Multi SD DC fan speed controller has been updated to be Navigator programmable.  Where the original Multi SD could be customer programmed for only 3 different temperature settings, 1 slope and 1 alarm setting, the new Multi SD has 100 full speed temperature settings, 100 alarm settings and virtually an infinite (9,800) number of  temperature slope settings for the customer to program.  The new multi SD is also compatible with our S-Series temperature sensors (tighter tolerance, lower price than the equivalent P-Series sensor).  Product will be available October 1, 2018.  Contact Sales@controlres.com or call 978 486 4160 for part numbers and Datasheets.

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For Engineers, By Engineers

Proudly Made in the USA

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About CRI
News & Announcements
Custom Design
SmartFan® AC Fan Controls
SmartFan® DC Fan Controls
Fan Failure Alarms
LabStrobe™ Stroboscope
Motor Drives & Motor Controls

Customer Service

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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