Lenel Systems International, Inc. (LenelS2)

Lenel Systems International is a well-known provider of integrated access control and security management systems, best known for its OnGuard platform. The company develops enterprise-class physical security solutions including access control, alarm monitoring, video management and integration tools used by large facilities, campuses and distributed organizations. Common products and components include Lenel OnGuard (access control), video integration modules, alarm monitoring services, and various system administration and server components referenced in customer environments.

Founded as Lenel Systems International, the company gained prominence in the access-control market and later became part of larger security portfolios through corporate acquisitions. In recent years the Lenel brand merged with S2 Security to form LenelS2, continuing to evolve its OnGuard product line and expand cloud, mobile and integrated security offerings while maintaining strong enterprise deployments and i...