Дверной звонок Legrand Serenity

Описание товара на английском языке:

• Easy installation without having to install new cables. Thanks to the battery operation, the wireless bell set can be mounted anywhere.
• Ring tone: In addition to 30 preset melodies, you have the option to play your own MP3 tracks via USB. The volume is max. 80 dB and can be adjusted via volume control on the chime.
• Long range between transmitter and receiver of up to 100 m.
• Expandable: Parallel connection of multiple chimes, it is also possible to pair up to 4 bell buttons with a chime.