[Multifunctional Doorbell]This unique wireless doorbell will not only make you miss all your visitors, but also any other electrical devices. Plug the wireless doorbell into the wall, then plug the device into the device as usual, it will not take your socket interface, and the appearance is small and exquisite, it is the first choice for use household.[300m long distance] This outdoor waterproof wireless doorbell has one transmitter and one receiver, open area up to 300m. Even if there are many obstacles (doors, walls), the doorbell can be heard in time. Don't worry about missing visitors. Ringtones will not interfere with other devices in or near your home. Suitable for homes, apartments, villas, offices, stores, warehouses, hotels, factories, etc. [60 ringtones and 5 volumes] High-quality speakers, using the most stable music chip, built-in 60 melodies, creating clear and pure. 5 adjustable volume levels from 0dB to 100dB, easy to choose and adjust your favorite sound, when the