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I don’t know all the difference you can check that revising each. But 4 allows for the 2.4mhz and the 5. The others only do 2.4
Sorry, there was a problem. Please try again later.The Ring website explains more/better, but I think the difference is that the Ring 4 includes quick replies for when someone rings your doorbell (in case you can't talk to them at the moment) and it supposedly has a "pre-roll" feature where you can see what happened a few seconds before the doorbell was rung, meaning you can see what direction they walked to your doorbell from. It also has the option for color vision at night, though this requires light to be directly around the doorbell to be most accurate.
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