According to the British Standard for building service, extra low voltage (ELV) is defined as any system operating in an voltage not exceeding 50V ac (or 120V ripple free dc). ELV system is a wide range of services in the building that can be provided by us.

In terms of the functional approach, it can be categorized into 9 main sub-systems:

• SMATV / CABD System (Satellite & TV receiving and broadcasting system)

• Public Address System

• Closed-circuit television (CCTV) Surveillance System

• Security Burglar Alarm / Card Access Control System

• Radio Paging and Walkie Talkie System

• Home Automation System

• Radio Frequency Identification System (RFID)

• Biometrics Security System

• Watchman Tour System