EMHOME Kinetic Wireless Doorbell, No Battery Required Push Button and Plug-in Receiver, Waterproof Doorbell Ring Chime for Kids Range Over 1000 Feets

This doorbell is actually louder than the one installed on the home. It has kept us from missing deliveries that needs signatures.

Have to push the doorbell push button several times before the receiver/ringer will sound

Very easy to install, good price, I have two floors, so it is easy to just plugin at the lower level for easy installation and now we can hear the bell in the basement