Wireless doorbell with kinetic energy - BlitzWolf® BW-DB1 - 38 ringtones, 4 volumes, RF433Mhz
Latest development in power supply:
Indoor unit: AC100V ~ 240V 50 / 60Hz
Outdoor unit: No separate power supply is required, when the button is pressed, it generates kinetic energy, so it sends the signal to the indoor unit.
30 meters indoors,
100 meters outside.
You can choose from 38 ringtones to use at a volume of 25 to 85 dB.
Water resistance (outdoor unit):
The protection level IP65 is resistant to any weather.