Serv Trayvou Interverrouillage

No Compromise On Safety

For 128 years, STI trapped key interlocks product range meets the safety and security needs of a wide range of industries including Railway, Energy, Chemical, Petrochemical or Food and Beverage. Originally developed for railway applications, STI products have quickly been accepted by the industry as the benchmark for efficiency, reliability for both people & equipment safety.

Attention Customers:

Please note that very soon we will be migrating to

All current product information and online resources will still be available to you, and easily accessible.

With new features and additional customer support, we’re looking forward to welcoming you to our new website at, soon!

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The KEY to Designing Your Interlock Safety Solution

We have been keeping people safe at work for over 120 years. So you can confidently put your trust in us. We will use our industry-leading expertise to help you solve your unique safety challenges, reduce risk, lower costs and keep your business protected and fully compliant. Above all, we never forget we’re helping you ensure your people get home safe at the end of every working day.

How a Trapped Key Interlock Solution Works

Reduce Risk, Protect Personnel & Eliminate Human Error!

A trapped key solution will enhance your current safety procedures, maximising your protection as well as other employees’ when performing procedures around dangerous machinery and equipment. Learn more and watch the full video.

Our sectors

News & Insights


June 15, 2023

Forklift Operators Safety: How to Safeguard against accidental drive-aways at the Loading Bay

Ensuring Forklift Operator Safety is vital as this equipment is frequently utilised at construction sites.  These automated industrial vehicle are […]


May 16, 2023

We are a Member of the WindEurope

Sentric Group is thrilled to announce that we have become a member of WindEurope, the leading association for the wind […]


April 28, 2023

Automated Loading and Unloading Systems: Benefits & Challenges

  Automated loading and unloading systems have become a critical component of logistics, particularly in the supply chain. Businesses are […]

Global Headquarters

Contact Details

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1ter Rue du Marais – Bât. B

93106 Montreuil Cedex


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+33 1 48 18 15 15

FAX +33 1 48 59 68 50