The core activity of SE Sicherheit & Energie AG is the provision of services and solutions in the field of security and energy, particularly in the following three main areas: 1. Locking technology: Development, sales and maintenance of mechanical and electronic locking systems for buildings and facilities. 2. Fire protection: Consulting, planning and implementation of fire protection concepts and solutions for private individuals, companies and public institutions. 3. Combustion control: Monitoring and control of combustion systems to ensure safe and environmentally friendly combustion. The company also offers additional services such as emergency services, maintenance contracts and consulting.