ONDO AC wireless doorbell, network, battery-free button, learning system, 36 sounds, operating range 200m

Wireless doorbell with battery-free button is designed for use in homes, apartments, offices, hospitals, shops, etc. No bell installation required. It is used for sound and light signaling. The doorbell (receiver) is switched directly into the ~230V mains outlet, and the transmitter is powered by an electromechanical transducer and does not require the use of batteries. The learning system function allows you to log in additional buttons. The range of the bell in the open area is 200m. The receiver has a 4-step volume control and 36 polyphonic ringing tones to choose from.