
【Energy Saving--Wireless Doorbell】 The standalone doorbell does not require any batteries. Press to provide electricity. Save the environment. IP68 Waterproof: Waterproof and moisture-proof, the outdoor doorbell can still work normally even after a short immersion in water. 【Four Volume Levels】Easy to adjust to your own needs, practical and reliable. A variety of ringtones are available for you to choose from, so you don't have to listen to monotonous ringtones all the time. Super Penetrating Power - Long Wireless Working Distance - Easy to receive signals without interference. Enjoy pleasant melodies when someone rings your doorbell. Easy to install: can add more receivers for better coverage; can be easily installed by simply fixing the transmitter to the wall without wiring.