It was so easy to install by myself. Having the 3 interior chimes (that also flash when used) is an absolute wonderful addition to our very large home! I was afraid they wouldn't get the signal to the upper level plug in chimes, but no worries.they work just fine!Didn't have to rewire the old doorbell systems to the front and back doors. Just plug and play! And they have numerous ring tones and they are nice and LOUD!Love it! I highly recommend this wireless doorbell system.
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