Projection, implementation, revision, post-warranty service:
- security technology systems:
- electric fire alarm system (EPS)
- electrical security systems (EZS)
- control of entry and movement of persons (ACS)
- industrial television (CCTV)
- common television antenna (STA)
- public address and emergency sound systems
- uniform time systems
- integrated communication systems
- home phones
- data and telephone networks, including fiber optic lines, etc.