The Ring Doorbell Pro is one of the most popular smart doorbells on the market and thousands of people across the country have raced to install the new doorbells. With Amazon's acquisition of Ring, I'm sure there are many feature upgrades in the pipeline. They have good picture quality and integrate well the existing suite of ring products.  We've been flooded with questions about what transformer to use with Ring Doorbell Pro and some of the common questions that come up during installation. So we tapped into our home automation partner companies Same Day Smart Homes & Greenfii to solve some of the questions we've been asked related to providing power to the Ring Pro Doorbell and what transformer to use with the Ring Doorbell Pro. 
While the August doorbell offers a more symmetrical picture with no barrel distortion, it doesn't support IFTTT integration like the Ring Pro does, and Ring's monthly cloud fees are a bit more affordable. As such, the Ring Video Doorbell Pro is an Editors' Choice for smart doorbells. The SkyBell HD is another top pick, and offers features that Ring doesn't, such as color night video, free cloud recording, and compatibility with Nest smart home devices.

I blame spotty home Wi-Fi for this particular performance problem. It’s not necessarily Ring’s fault that my Wi-Fi network is a weak link in its communication chain, but this is a product that relies on home Wi-Fi to work in the first place. The problems I suffered reveal an intrinsic, inescapable weakness in Ring’s workflow, and should remind us that all Internet-connected home appliances are only as strong as the weakest link in their networks.
If you unscrew your old doorbell you will see that there are two wires running to it and two terminals. You can take a multi-meter and measure the voltage across the two terminals. If it reads  in the range of 16V-24V you most likely have enough power for your Ring Doorbell Pro, but you sill need to check the amperage. We recommend the multi-meter below because it is the simplest to use without extensive knowledge of electrical workings. It has auto-ranging meaning you only need to turn the multimeter to the correct dial and it will tell what the voltage is. The correct "dial" setting to measure voltage is the "V" with the lines on top.  Even if your voltage is reading 16V you still need to check that you have 30VA of amperage from the transformer as this is the recommended amperage requirements from the manufacturer of the Ring Pro Doorbell. 
Both systems offer exceptional protection and support, so the choice really comes down to your unique needs. For someone who wants their home to be fully automated and for their devices to talk to one another, Nest is the easy choice. While more expensive, the system offers excellent connectivity and added products like the Nest Tags and connected lock.
3 - If you do not answer the alert fast enough, you are locked out-- even though someone is standing at your front door. You cannot "turn on" the camera from your phone or tablet. If someone is there and you do not have an "ACCEPT" button on the screen, there is just no way to see or talk to them. This is obviously a software flaw. You should always be able to "wake" a camera remotely and talk to a person at your front door. Or maybe you just want to see the view outside your front door. You should be able to access the camera / microphone and enjoy your front yard.
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