
I bought this because the old wired doorbell apparently shorted and started smoking. Disconnected it but left it in place for aesthetic reasons. Besides, I didn’t like smoke.The bell tones (there are a bunch of different ones to choose from) are shorter and sound much better than the cheaper version. I keep it on my desk on the loft in our home and can hear it even without my hearing aids.I had difficulty inserting the three AAA batteries (not supplied) because I could not pry open the battery cover with my fingernails. I had to use a tiny screwdriver (the kind used on eyeglasses) to open it, but in so doing it damaged the little piece used to hold the cover in place. It still works without the cover (which does not stay on), so I Scotch taped it into place. I deducted one star for that. And don’t let me forget to mention that’ its expandable. If I want a button on the back door, it’s no problem. I can even add a motion sensor to this system, which is good when a delivery man just puts packages on the doorstep without ringing the bell.

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