
When I installed the Ring DoorBell Pro in my daughter's house, I also replaced the mechanical doorbell with one (a different one mechanical) on the list of compatible rings (many of them have different brand names but are made by Heath-Zenith and are inexpensive). The call only cost me about $20 at Lowes. Old bell, even before Ring Doorbell Pro barely rang. The old transformer was 16v 15amps. The new bell rang normally and the status of the doorbell was fine. However, I wanted a better transformer to avoid problems. New 16V 30A. I bought another one for my house to replace the small 10A. The old one used a metal box for ground, the new one used a plastic nut for attachment and a separate ground wire. So I used a short green ground wire from Home Depot (Lowes sells those with a poorly designed screw that won't cut into a hole in the box) to thread it into the hole in the box, cut off the other end, and stripped it and pocketed it. to the green ground wire of the transformer. The new doorbell with this transformer rings much louder and seems to go faster. The bell itself requires a 10 amp transformer so I have enough for the RIng Doorbell Pro and Chime. The transformer was packaged very well and looks like a quality product. I also like that the transformer has a cover over the transformer plates that protects it. The price was great too! It is UL recognized and well documented. It has an internal thermal fuse (115 degrees) on the low voltage side. More power is needed at night and when someone rings the bell and this transformer is just what you need to avoid problems. Note that there may be more than one circuit in the switch box that houses your old transformer. So if you turn off the doorbell, the hotline could stay inside. So know what you are doing. One tip is that you should trim the insulation on the transformer's three wires to about 3/4-1 inch prior to installation to allow enough room for it to wrap around the wires and not rely entirely on plastic nuts to keep him in place. Remember you are talking about a 120V circuit here so knowing what you are doing, turn off all breakers for all leads in the box and check that there is power inside before you begin. help me If you don't know what you're doing, find someone who does.

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