I bought this 'add-on" to replace the bell unit on a full set that I had bought earlier. The bell unit on that one went bad after just 3 months. I've speculated that it was susceptible to an energy surge. So, I've plugged this one into the surge protector that I use for my computer.
AVANTEK D-3W Waterproof Wireless Doorbell Kit With 2 Plug-In Receivers Operating At Over 1300 Feet, 52 CD Quality Melodies, LED Flash, And Long Range
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π Robertson 2P20132 Quik-Pak: 10 Fluorescent eBallasts for 2 F40T12 Linear Lamps, Preheat Rapid Start, 120Vac, 50-60Hz, Normal Ballast Factor, NPF, Model RSW234T12120 /A (Crosses to RSW240T12120 /B)
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