Using the diode included with your Ring Video Doorbell (1st Generation)
There are two versions of the Ring Video Doorbell. Ring Video Doorbell (2nd Generation) does not need a diode. If there is no diode in the box, you most likely have the Ring Video Doorbell (2nd Generation), which has a built in diode.
The diode included with your Ring Video Doorbell (1st Generation) connects your Video Doorbell to an existing doorbell's digital bell. The diode should not be used with a mechanical bell or if you're using Ring Video Doorbell (1st Generation) with the battery alone and not hardwiring it. Also, do not use the diode with the Ring Video Doorbell (2nd Generation). The video below gives more detail on when you should and shouldn't use the diode. If you're not sure whether you have a Ring Video Doorbell (1st Generation) or Ring Video Doorbell (2nd Generation), scroll down on this page to see images of both.
To find out if your door chime is mechanical or digital, the simplest method is to listen to the sound your bell makes when you ring it. If it makes the traditional "Ding Dong" sound, it is most likely a mechanical bell and the diode should not be used. You can also take the cover off of your bell and take a look inside. If you see a mechanical striker as pictured below, then you have a mechanical bell.
If, on the other hand, your bell consists of a speaker that plays a melody, it's a digital bell and you must use the diode (pictured below) included in the box.
If you have a digital bell, connecting your Ring Video Doorbell (1st Generation) to an electronic bell is a simple process. Click here for step-by-step instructions.
Ring Video Doorbell (1st Generation) has two small sensors on the top next to the orange button. The mounting plate has three sensors on it.
Ring Video Doorbell (2nd Generation) has two small screws next to the orange button. The mounting plate does not have any sensors on it.