ORNO OR-DB-MT-165, Doorbell radio, 36 sounds, 200m, black

A set of two wireless doorbells with a battery-free button is designed for use in houses, flats, offices, hospitals, shops, etc. A doorbell installation is not required. It is used for sound and light signalling. The bell (receiver) is connected directly to the ~230 V mains socket and the transmitter is powered by an electromechanical transducer and does not require batteries. The learning system function allows you to register additional buttons. The range of the bell in free field is 200m. The handset has a 4-level volume control and 36 polyphonic ringtones to choose from.