WIRELESS DOORCHIME AC P5750.2R

Product - wireless doorbell (2x)
Distribution in open environment - 150 m
Number of melodies - 10
Pairing method - automatic
Signal - optical, sound
Maximum ringtone intensity - 110 dB
Possibility to add buttons - yes, 3 max
Waterproof button - yes
Volume control - yes
Transmission frequency - 433 MHz
Color - white, red
Power supply - 230 V
Button does not require battery !