ELV is the terminology used in the construction world in an attempt to electrically define all the systems in a building which need electricity to run but are not part of the building’s main electrical system. ELV covers all the new modern technologies that are increasingly becoming must-have systems in every building such as data network, CCTV, fire alarm systems, public address systems, audio/video solutions, access control and intrusion detection systems, home automation, and much more!

🏗️ Introduction

ELV (Extra-Low Voltage) refers to all the systems in a building that require electricity but are not part of the building’s main electrical system. These modern systems are essential to building operations and safety:

• 📶 Data Networks (LAN & WLAN)
• 🎥 CCTV Surveillance
• 🔥 Fire Alarm Systems
• 🔊 Public Address & Alarm Systems
• 📺 Audio/Video Solutions
• 🔐 Access Control & Intrusion Detection
• 🏠 Home Automation

Choosing between wired and wireless ELV systems is a critical step in planning building infrastructure. Here’s a complete guide.

🌐 Data Networks

🧷 LAN (Local Area Network)

Also known as Structured Cabling System (SCS). LAN connects computers and devices across the building using CAT6 or fiber cabling.

• Best for: High-speed, secure, and stable internal networking.

📡 WLAN (Wireless LAN)

Wireless Access Points (APs) provide internet coverage throughout the building.

• Best for: Mobility, BYOD (Bring Your Own Device) environments, and temporary setups.

☎️ Telephone Systems

📞 Analog PBX

Traditional system using POTS lines to connect to the public telephone network.

• Pros: Reliable, simple to operate
• Cons: Limited features, outdated

🌐 IP PBX

VoIP-based (Voice over Internet Protocol) system that uses internet connections to handle calls.

• Pros: Cost-effective, flexible, modern features

🎥 CCTV Surveillance

Modern CCTV systems now use IP Cameras that connect over LAN, replacing older analog coaxial systems.

• Pros: Scalable, supports remote monitoring
• Cons: Requires strong network backbone

🔊 Public Address Systems (PAS / PAGA)

Used for:

• Announcements
• Background music
• Emergency alerts

Older systems use twisted-pair wiring, but newer models support LAN-based distributed designs.

🔐 Access Control System (ACS)

Manages secure access via:

• RFID cards
• Biometrics (fingerprint, iris, face)

Uses LAN for software communication and electrical wiring for doors and gates.

📺 SMATV / IPTV Systems

• SMATV/CATV: Uses coaxial or fiber
• IPTV: Uses LAN and is increasingly preferred

Provides centralized TV access across multiple units or rooms.

📋 ELV Project Lifecycle

1. Requirement Collection 📝
   • Client defines functional needs based on building type
2. Design & Procurement Phase 📐
   • Client or consultant defines the Employer Requirements (ER)
3. Tender Process 📤
   • Main Contractor invites proposals from ELV Subcontractors
4. Site Visit & Risk Assessment 👷‍♂️
   • Mandatory before proposal submission
5. Proposal Submission 📑
   • Technical Proposal:
     • Company profile, registrations, labor WPS, TRN, insurance, etc.
   • Commercial Proposal:
     • Quotation, work schedule, method statement
6. Award & Material Approvals ✅
   • Submit samples and technical submittals
   • Await consultant approval

📞 Contact Us

ELV Techies Integrator
📍 Qatar, Doha
📞 +974 72041860
📩 elvtechiesintegrator@gmail.com
🌐 www.elvtechies.com