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2. While we found battery powered units such as RemoBell quicker to install, doorbells like the Ring Video Doorbell 2 that also connect to your existing doorbell wiring are superior in almost every way. However, batteries mean units are much larger than a traditional doorbell button. In contrast, doorbells that only use a hardwired connection, like the Nest Hello and Ring Video Doorbell Pro, are slimmer and usually look nicer. ChimesAlthough video doorbells replace the button on your doorbell, some still need the chime already installed in your home. There are two types of doorbell chimes on the market: mechanical and digital.