Introduction

In modern construction, ELV (Extra Low Voltage) systems play a vital role in improving safety, communication, automation, and energy efficiency. These systems operate below 50V AC or 120V DC and are essential in commercial, residential, and industrial infrastructure.
Here’s a comprehensive list of ELV systems, categorized by their function — from security and communication to automation and control.

🔒 1. Security & Safety Systems

These systems ensure safety, surveillance, and controlled access throughout the facility.
• CCTV Surveillance System
• Access Control System
• Fire Alarm System
• Intrusion Detection & Alarm System
• Gas Detection System
• Emergency Evacuation System
• Lift Interface System

🎤 2. Communication & Information Systems

ELV systems also handle internal and external communication, announcements, and information sharing.
• Public Address & Voice Alarm (PAVA) System
• Intercom System
• Video Door Phone System
• Audio-Visual (AV) System
• Wireless Communication System
• Queue Management System
• Master Clock System

💻 3. IT & Networking Systems

These form the digital backbone of modern buildings, connecting people, devices, and systems efficiently.
• Data and Voice Communication System
• Structured Cabling System
• IPTV & SMATV System
• Central Battery System (CBS)
• Energy Monitoring System
• Smart Metering System

🏢 4. Building Automation & Management Systems

Automation systems optimize comfort, energy use, and operational efficiency.
• Building Management System (BMS)
• Lighting Control System
• Home Automation System
• Parking Management System
• Background Music System (BGM)
• Solar Power Monitoring System

🏥 5. Specialized Systems

These ELV systems serve niche or sector-specific needs, especially in hospitals, malls, and large institutions.
• Nurse Call System
• Time Attendance & Visitor Management System
• Gate Barrier & Turnstile System
• Leak Detection System

Conclusion

From surveillance to automation, ELV systems are the hidden backbone of modern smart buildings. They enhance safety, communication, and operational efficiency while reducing energy consumption.

At SOS Technology, we specialize in designing, integrating, and maintaining advanced ELV solutions that make buildings smarter, safer, and more connected. Whether it’s a corporate office, hospital, or residential project, our expertise ensures reliable performance and seamless system integration for the future of intelligent infrastructure.