great works very well

Wireless range is great (works in all corners of a 2-story, 1940's construction California home) and as other reviewers have noted it is truly plug and play.

These work great and are VERY loud, just as I hoped.

Good range, triggers from 4 rooms away Clear doorbell tone (can hear w/o my hearing aids in), Large easy to press button,Cons: .One of the buttons stopped working after a week, still lights up when pressed.. just doesn't trigger chime/receiver.