Doorbell wireless 2 pcs 230V battery-free button

Product - wireless doorbell in socket (completely 2 pcs.), with battery-free button

Range in an open environment - 180 m

Number of melodies - 36

Pairing method - automatic

Battery free button - yes

Signal - optical, sound

Maximum ringtone strength - 90 dB

Option to add buttons - yes, max 6

Waterproof button - yes

Volume control - yes, 4 levels

Transmission frequency - 433 MHz

Color - white

Clock power source - 230 V