Ring Dong electric and battery-powered doorbell

Brand new, beautiful "Ring Dong" doorbell. It can work both with electricity and with a separate battery. It has a very nice sound – high quality, super product. Because we have an old wiring system and no socket, and it is not possible to dig the walls again, drill holes, and pull wires outside for a push-button doorbell, it is being sold below its price – for 15 AZN. WhatsApp and calls are active.