Selectronix, Inc.

Woodinville, WA

A Custom Product Development and Design Consulting Company


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 Boiler and HVAC Step Controllers


Looking for a replacement for Athena, Barber-Colman, CAM Industries, Cesco, Cleaver-Brooks, Coates Heater, Indeeco, Honeywell,  Solitech, or Viconics Step Controllers?


See our economical Building Management Interface (BMI)!

SLC4075, Touchscreen Gateway

SLC4060, Process Gateway

See the salient features!

Introducing our Classic Lead Lag Control for Gas & Electric Boilers!

     See our economical POPS and PPS "Lead/Lag" Control for Gas & Electric Boilers that is used with or without our BMI!


See our Competitive Cross-Reference

  All of our step controllers and the new Building Management Interface are now  UL Recognized Components for Canada as well as US!

SLC4024 (24V version of SLC4000) now UL and in stock!

bulletFull-featured Microcontroller-based........4000 Series  

bulletThe 'Workhorse'................................. 2100 Series











bullet Honeywell Temperature Controllers, Accessories

                 For convenient system upgrades or replacement!


Boiler Manufacturers or Value Adders Using Selectronix Load Controllers









 General Boiler


If your company has purchased from us and you would like your logo and link added here, at no charge, email!



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Contact Information

       Woodinville, WA  98077-5401
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Last modified: June 25, 2017