Extra-low voltage (ELV) services are a crucial part of a building's mechanical and electrical systems that provide a range of services, including:

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• Security:

ELV systems can provide access control, security, and intrusion detection

• Connectivity:

ELV systems can provide connectivity to the internet, phone, and cable systems

• Energy management:

ELV systems can help with efficient energy management

• Communication:

ELV systems can enhance communication with public address systems and audio/video solutions

• Comfort:

ELV systems can enhance comfort with lighting, air-conditioning, and heating

ELV systems are used in a variety of buildings, including offices, hotels, hospitals, shopping complexes, and apartments. They are an important component of modern building infrastructure and play a critical role in creating intelligent, connected spaces.

ELV systems are defined as systems that operate at a voltage of no more than 35V AC or 60V ripple free DC. They are significantly less dangerous than normal mains voltage, such as 220-240V in the UK.