Wireless doorbell OPERA AC 230V, black OR-DB-YK-117

It is used for sound signaling
the receiver is powered directly from the 230V mains socket
battery operated button (included)
perfect as a doorbell or as a calling device
48 built-in polyphonic ringing tones to choose from
4 levels of ringer volume control
learning system (additional transmitters and receivers are logged in automatically)
the number of bells and buttons cooperating with each other can be increased as needed
waterproof bell button
does not require bell installation
Useful at home, in the company, in public buildings or people in need of care