Who are we?

LESI is a high-tech company that provides a very wide range of products and services. The company has a 30-year history and owns two modern electronics factories in Plovdiv, Bulgaria. It has an established and world-renowned development department for innovative products and solutions. The company enjoys the trust and respect of its millions of end customers and thousands of partner companies.

The production and activity of the company "LESI" includes:

  • electronic locking systems;
  • electromechanical locks;
  • security systems for cars and homes;
  • car accessories – immobilizers; power glass control modules; remote ignition modules; modules for automatic headlights;
  • alarms with GSM communication;
  • alarm systems for 24 volt trucks;
  • telephone dialers and mobile communicators;
  • remote control modules;
  • complete systems for energy efficiency, access control and air conditioning of public buildings, hotels, office buildings, enterprises;
  • security of goods;
  • controllers and automation electronics;
  • air conditioning control controllers;
  • production and development of custom electronics.
  • engineering in the field of locking
  • systems and access control;
  • engineering in the field of building automation and energy efficiency;
  • security and video surveillance engineering;
  • production of electronic products and systems at the request of the client;
  • electronic board saturation (SMD);
    production of injection molds and plastic products at the request of the client;
  • production of cable molds.

From the beginning to the present day


Administrative department

takes care of company documentation, marketing, management, finance, logistics, advertising, monitors regulations and requirements and their compliance, etc., so that always and at any time the company is at the level not only of Bulgarian but also international markets ..


Sales Department

For quality and polite customer service and assistance in choosing a system for quality protection of their property! We have made special demonstration boards, with the help of which the clients get acquainted in detail and physically with the products, the way of functioning and their possibilities.


Development department

The department in which all our products are created and optimized. Our specialists gather information from other departments to develop the perfect products for customer needs.

Electronics department

The production hall is equipped with a fully automated high-tech and high-performance production line (up to 40 thousand elements per hour). It has an automated air conditioning system with energy efficiency. An access control system and electronic locking systems have been implemented. A system for security, video surveillance and fire alarm has been built.

Mechanics department

Fully air-conditioned building with implemented system for energy efficiency, access control and video surveillance. The mechanical workshop has new high-tech metalworking machines: – vertically machining centers with Fanuc control; – volumetric erosion machine with possibility for 3D processing and road corrections; – digital lathe; – milling machines and lathes; – others.

Installation department

Our team of installers is composed of trained engineers with over 15 years of experience in installing locking systems in each type of door.