About ELV

Why ELV?

An Extra Low Voltage (ELV) system refers to electrical systems that operate at a voltage level lower than the standard mains supply, typically below 50V AC or 120V DC.

These systems are mainly used for communication, security, control, and monitoring purposes in buildings, offices, industries, and residential projects.

ELV systems are considered safe, energy-efficient, and reliable since they do not carry high electrical risks like shock or fire.

Common Types of ELV Systems:

  • CCTV Surveillance System – For security monitoring.
  • Access Control System – Door entry, biometric, RFID-based security.
  • Public Address (PA) / Voice Alarm System – For announcements and alerts.
  • Fire Alarm & Detection System – Safety and emergency response.
  • Data & Telephone Network System – Structured cabling, LAN, Internet.
  • Intercom System – Internal voice communication.
  • Building Management System (BMS) – Centralized monitoring and control.
  • Audio-Visual (AV) System – Meeting rooms, auditoriums, smart classrooms.


What is Extra-Low Voltage Systems?

If you own or are constructing a building, chances are you may have come across the term “Extra-Low Voltage Systems” or “ELV”. Extra-Low Voltage Systems (ELV) which refers to all the systems in residential and commercial buildings that operates on low voltages.

ELV systems are an important component of every building, as they provide the additional services that completes a building. These systems provide the additional services to provide security to the buildings, control access, connectivity to internet, phone and cable systems. As ELV systems usually comprise of a variety of sub-systems to meet the requirements of of all the services in a building, modern ELV systems are designed to be a total solution to be integrated for ease of management and to save cost.

Other features of ELV systems are: It is now designed to work on Internet Protocol as the communication protocol, comes with an open architecture format, has a user-friendly mobile app and management software.

Now that we understand more about ELV systems, what are their sub-systems or components? These comprise of:


Security System


  • Integrated Security Management System (ISMS)
  • Card Access Management System (CAMS)
  • Lift Access Control System
  • Visitor Management System (VMS)
  • Closed Circuit Television (CCTV) System
  • Guard Tour System
  • Emergency Panic Button & Intercom System
  • Turnstile & Swing Gate
  • Barrier Gate, Parking Management System & Parking Guidance System (PGS)
  • Home Alarm Security System
  • WAN & LAN Wired and Wireless Networked Solutions
  • Server & Storage

ICT And Service System


  • Public Address System (PA)
  • Satellite Master Antenna Television (SMATV)
  • Audio Video Intercom System
  • PABX & IP-PABX
  • Audio Visual (AV) System
  • Structure Cabling

Most of these components should sound familiar to you, and as such, you would know that they are essential to business operations. Adhams provides ELV system integration services for various commercial industries such as telecommunications, security, and surveillance. Our team of highly experienced engineers and technicians have over 20 years of experience in designing and building ELV systems, complete with detailed testing and monitoring to ensure full functionality.

Our available solutions include:


  • CCTV Surveillance
  • Access Control System
  • Burglar Alarm System
  • Perimeter Intrusion Detection System
  • Barrier Gate, Turnstile & Swing Gate Management
  • Fire Alarm & Detection System
  • Audio/Video Intercom
  • Public Address System
  • Smart Homes
  • Smart Locks