I lived many years without a doorbell. My home is over 100 yrs old. I had a very important visitor the next morning after installing. I wouldn't have heard them knocking, so the timing was perfect. Every time I come in the door and see my transmitter, I smile. The selection of ring tones is great. I can't believe I went nearly 14 years without a doorbell. I'm 65 and had no problems installing it. Great product.
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