Optimal Power Supply: The plug-in power supply provides a reliable power source for Legrand's Easykit intercom sets. Plug-in Power Supply: The power supply is conveniently and efficiently provided through the included power adapter, allowing for straightforward installation without additional wiring in the distribution box. Flexibility: The plug-in power supply is perfectly aligned with the flexibility of the Easykit intercom sets. The system can be easily expanded with additional cameras, ensuring your security. 2-Wire Technology: The 2-wire technology enables quick and easy installation. The plug-in power supply supports this technology, allowing existing doorbell systems to be easily replaced. This is ideal for new constructions and renovations.