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Our Story | Encoder Products Company

  1. EPC Is Founded

    Encoder Products Company is founded by Bill Watts, an engineer who believed motion control could be smarter, more reliable, and more customizable. His focus was simple but bold: build encoders that solved real problems for real customers, and back them with unparalleled support.

    bill watts
  2. The Cube Encoder is Born

    Original Cube Encoder

    cube encoder sketch
  3. 1972

    EPC moved to Sandpoint, Idaho. Occupied space next to the Panida Theater.

    downtown sandpoint
  4. 1973

    1973

    Built green building at 1601A Highway 2 and moved in.

  5. 1979

    1979

    Built, moved into large building behind the green building. Currently the Forrest M. Bird Charter School.

  6. 1985

    The initial section of the Westmond building in Sagle, containing the shop and cube production, was constructed and moved into.

    sagle-building-in-progress
  7. 1987

    British Encoder Products Company was established in the United Kingdom.

    BECo on white
  8. 1990

    Model Release - 755A

    755A
  9. 1992

    Model Release - 725

    725
  10. 1995

    Model Release - 770

    770
  11. 1996

    Model Release - 702, 758, 775, 776

    702-758-775-776
  12. 1997

    Model Release - 260

    260
  13. 1998

    Model Release - E-Cube

    e-cube
  14. 2002

    Model Release - 225, 121​


    In Fall 2002, EPC sold its one-millionth encoder, a Model 713-HD10 to Ground Force in Post Falls, Idaho.

    225 product launch and 1M
  15. 2003

    Model Release - 15T/H/S

    15T-S
  16. 2003

    Completed additions to the original Westmond building, combining machine shop and all production lines under one roof, now known as the Sagle facility, EPC's headquarters.

    epc headquarters
  17. 2003

    Model Release - LCE

    LCE
  18. 2005

    Model Release - TR1​

    tr1
  19. 2007

    Model Release - 25T/H

    25th
  20. 2009

    Model Release - TR3

    tr3
  21. 2014

    ​Late summer we sold our two-millionth encoder, a TR1 Tru-Trac to Label Vision Systems.

    2M encoder
  22. Code-E the Encoder is Born

    EPC's beloved mascot is developed in a sketch by salesman, Steve Dilts. While mostly used for internal marketing and events, the marketing team decided to bring him back and give him a modernized look and life!  Jump to 2025 to see how Code-E has evolved and is used more today.

    cody_thumbs up
  23. 2015

    ​Model Release - 30M

    30m
  24. Facility Modernization & New Manufacturing Equipment

    EPC invests heavily in U.S.-based machining, electronics assembly, and quality control—strengthening reliability and lead times. 

    equipment_delivery_manufacturing_improvements
  25. Growth in Robotics, Packaging, and Material Handling Markets

    As these industries scale, EPC becomes a go-to encoder partner for OEMs building high-precision motion systems. 

    material_handling_industry
  26. Redundant Encoder Solutions Introduced

    Meeting the increasing demand for safety and reliability, EPC’s redundant encoders support critical applications in mobile equipment, cranes, elevators, and material handling.

    redundant_encoders
  27. COVID-Era Repsonsiveness

    Despite global supply chain disruptions, EPC maintains some of the fastest lead times in the industry thanks to U.S.-based manufacturing and strong supplier relationships.

    quick lead times-1
  28. Enhanced Industrial Networking Encoders

    EPC introduces IO-Link-ready encoders and advanced communication capabilities, helping customers future-proof their systems.

    io-link
  29. Accommodating the Elevator Market

    Product Launch - 25T with Terminal Block Connector

    25t_10-pin
  30. Expansion into Safety & Mobile Equipment Markets

    EPC strengthens offerings for mobile equipment, AGVs, AMRs, autonomous systems, and safety-rated applications. 

    safety-mobile-equipment
  31. Launch of the LP1 Accu-LaserPro™ Non-Contact Encoder

    A milestone product for EPC, the LP1 introduces laser-based, non-contact motion feedback

    This innovation marks EPC’s entry into a new category of sensing technology.

    LP1
  32. Strengthening Partnerships

    While EPC has utilized Wachendorff technology in our encoders for a long time, an official partnership has now been established.

    Partnering with TWK has brought in a new line of Safety Encoders to ensure the best quality in motion feedback in the mobile equipment market.

    epc partnerships
  33. Code-E Rebranding

    Code-E has been reborn! With an updated design, the EPC marketing team has been utilizing Code-E throughout social media, eblasts, the website, and tradeshows. 

    Maybe you've seen him around or maybe you even have a Code-E sticker or a Code-E stress ball!

    code-e
  34. Tru-D Tru-Trac

    Tru-D was introduced in spring 2026 as a relative of Code-E. She is the main representative mascot of EPC's Tru-Trac encoders such as the TR1, TR2, TR3, and the programmable, TRP. 

    tru-d

Looking Ahead — The Future of EPC

EPC continues to evolve with a clear purpose:

•   Lead the industry in encoder innovation, including non-contact, redundant, and intelligent sensing technologies.

   Strengthen engineering partnerships, offering even more rapid custom solutions.

   Enhance the digital customer experience, meeting engineers wherever they search for answers.

   Maintain fast U.S. lead times, exceptional support, and long-term reliability.


EPC’s next chapter focuses on being the encoder partner that customers rely on—not just for products, but for insight, collaboration, and problem-solving.
EPC_buildingWithFlag_1340x583EPC's world headquarters, a 100,000 square-foot, vertically integrated facility located in Sagle, Idaho.

Throughout EPC’s history, we have been proud to say our products are "Made in the USA." Unfortunately, labeling laws have changed. Now, if there are components of a product that are entirely or substantially manufactured outside the US – even proprietary components designed by our own engineers – we cannot legally mark that product as "Made in the USA."

EPC continually strives to source as much as we can from fellow US manufacturers. Unfortunately, that’s not always possible. To provide you the highest quality and best-performing products possible, it’s sometimes necessary to source components abroad.

When Encoder Products Company was founded in 1969, it started in the garage of Bill Watt’s suburban US home. As EPC grew, the company remained committed to keeping our manufacturing in the USA, as we do to this day. So while we can no longer label our products “MADE IN THE USA,” we can tell you we will continue to be a company that proudly keeps this manufacturing facility right here in the US.

Additional Information

For government and defense buyers, we are registered as "Encoder Products Company" on www.sam.gov.

If you need an ECCN classification for our products, all of our incremental rotary encoders are classified as EAR99. For any other products or accessories, please contact us.

 

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