SadoTech's wireless doorbell easily pairs and connects so you can make your wireless doorbell battery powered. Customize it by simply selecting from more than 50 doorbell chime sounds. Has 4 volume settings, perfect for naptime or parties. Not only have we made the traditional door bell ringer wireless, but we made it smart too. It will remember your customized settings and has sleek, modern LED lights that illuminate to easily spot at night.