About Us

We are a family-owned business, dedicated to creating safer communities. Our technology prevents alcohol impaired drivers from operating a vehicle – whether it’s a car, commercial vehicle, fleet vehicle or school bus. For over 17 years, we have provided ignition interlock systems and services to companies and individuals who share our commitment to safe driving.

Our high quality, easy-to-use products and personalized customer experience set us apart from other providers. Our empathetic, non-judgmental approach to working with our customers allows us to achieve a common goal; to protect drivers, passengers and communities across America.

Our Mission

Our mission is to promote the adoption of alcohol detection technologies that help prevent driving over the legal alcohol limit, promote family/community safety and help to significantly reduce the legal, social and financial costs associated with alcohol-related driving violations.

Why Sens-O-Lock of America?

  • We recognize that this may be a difficult situation—we will respect your privacy and treat you with dignity.
  • The most extensive ignition interlock installation network in the country—means convenience for you.
  • The best customer support in the industry—helpful, courteous support professionals to help you.
  • Competitive pricing means a better value for you.
  • The most advanced, reliable and easy to use ignition interlock technology on the market—means less hassle for you.


Craig Lotz, CEO - Craig is a seasoned executive leader in the technology industry with over twenty-five years of domestic and international experience with both Fortune 100 and start-up organizations, alike. He began his career with NCR Corporation. He began his 15 year tenure with the company in sales and held increasingly responsible positions in industry management/marketing, sales management, strategic marketing, global sales, customer service, and, ultimately, executive management. Craig has also served as President/CEO of several technology companies in the U.S.

He and his father launched Sens-O- Lock of America in order to address the growing concern and social discord associated with driving under the influence of alcohol. Having been an adviser to a 12 year old family ignition interlock business started by his father, Walter B. Lotz, Jr., in 1998, Craig and his Dad established a partnership with B.E.S.T. Labs of Boardman, OH and Installernet of North Andover MA, to bring to market the most sophisticated technology available along with the comprehensive network of installation partners available. This combined with a history of demonstrated performance in providing world-class customer service makes Sens-O- Lock of America an outstanding partner for ignition interlocks and other related technologies.

Craig graduated from Bryant University with a BS in Marketing/Business Administration. He resides in Johns Creek, GA with his family. Craig is an avid golfer and tennis player. His Father is now retired and resides in Summerfield, FL and remains as an advisor and Chairman of the Board.

FR9000 Training Video (English)

FR9000 Training Video (Spanish)

WC9000+ Training Video (English)

WC9000+ Training Video (Spanish)