WIRELESS DOORCHIME AC P5729B

Product - wireless doorbell socket
Distribution in open environment - 180 m
Number of melodies - 36
Pairing method - automatic
Battery free button - yes
Signal - optical, sound
Maximum ringtone intensity - 90 dB
Possibility to add buttons - yes, max 6
Waterproof button - yes
Volume control - yes, 4 levels
Transmission frequency - 433 MHz
Color - black
Clock power supply - 230 V