Battery-operated wireless doorbell with a hermetic button, range 100m, Rumba ST-370, black and white SUN10000444

Bell set with a battery-free (kinetic) button. The bell has a wireless button, in which, thanks to the converter of mechanical energy into electricity, the need for power batteries is eliminated. No batteries, wireless functionality, a wide range of operating temperatures and resistance to water are the advantages of the transmitter that guarantee its correct operation also in difficult weather conditions (e.g. in frost, rain) for a long period of time. The water resistance of the button and the lack of a battery also means that it works even when completely submerged in water. Battery powered doorbell (3 x AA), button does not require power supply. Operating range 100m in open area. Possibility to program 3 buttons for one bell. 32 sounds and melodies to choose from. Volume about 80 dB.