Your doorbell ring button is exposed to the elements and over time can deteriorate. Replacing it is very easy and will only take a few minutes. All you need is a screwdriver and a pair of pliers.
Before you get started, you need to go outside and look at your current doorbell button. You want to take note of the size and shape so the replacement button matches. If you buy one that is a different size and shape, you will need to caulk and paint the areas that will be newly exposed. Now go ahead and remove the two screws holding the push button onto the house. You are doing this to see if your doorbell button is wired or wireless. This is pretty simple, if there are wires attached to the button, it is hardwired. Now you have the information you need to go to the home improvement store. Size, shape, wired or wireless.
Okay, you are back from the store with your shiny new doorbell push button. I recommend turning off the power if your doorbell is hardwired. Doorbell systems are only 12 volts and you probably wouldn’t feel any shock, but better safe than sorry.
Remove the two screws holding the ring button to the house just like you did before you went to the store. If your button is hardwired, you will see two wires attached to the back of the button. Simply take a screwdriver and turn the screws counter clockwise just enough to pull the wires off. Attach the wires to the new doorbell button just like they came off the old button. It does not matter which wire goes to which screw, only that each screw has only one wire going to it. You may need to use pliers to shape the wire to curve around the screw posts. Now push everything back into place and fasten the button to the house using the two screws provided with the new button.