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Meet Mike Richardson:
Designer, Inventor, Engineer

Signal Filters (Filter Division of Entratech Systems LLC) was started by Mike Richardson to solve a problem
Mike Richardson
he had with water in his boat fuel. Mike developed a water detection sensor because he did not want to be left stranded in Lake Erie. The rest is history. Mike has invented or improved many sensor assemblies and is always looking for a challenging problem to solve. Like most entrepreneurs Mike can't sit still. He has patented numerous products. Signal Filters sensor assemblies are made in the USA in Sandusky Ohio, (Home of Cedar Point Amusement Park).

Signal Filters runs a turnkey operation in this modern facility - designing, engineering and manufacturing the highest quality, most trusted sensors in the industry. The integrity of our professional staff has proven itself for years, partnering with customers and sharing the latest in product technology.

Trust. Security. Integrity.
Our knowledge and experience, secure environment, and high-quality product standards meet or exceed specifications for use in military equipment. It's also why leading automotive, marine, and industrial OEM manufacturers around the world choose Signal Filters Sensors to protect their products.

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Signal Filters Sensors Offer Protection
You Can Depend On
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Our high quality standards and attention to detail at all levels of our operation have earned the trust of OEM suppliers worldwide for more than three decades. Whatever your application, we can deliver a sensor or control solution that will give long-lasting protection for your product. All units are designed and assembled to strict standards - whether your application requires a standard sensor or a custom unit with outputs for multiple installations including:
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  •  Relays
  •  Transistors "sink or source"
  •  LED displays
  •  Visual and audible signals
  •  Engine computer inputs


Units are tested to be EMC compliant and meet or exceed all other industry standards. We take pride in delivering your order on time and on budget.

Signal FiltersTM Fuel Flow AnimationCutaway animation of Fuel flow
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ISO 9001:2015 ABYC_Certificate Member of NMMA Member of NMEA
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Signal Filters 202 East Fox Rd., Sandusky OH 44870
PH: 419-433-7683
FAX: 419-433-8293
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Signal Filters™ Is a registered trademark of and manufactured by Entratech Systems LLC | www.entratech.com