Maxdot 1 Pack Doorbell Transformer 16V 30VA Compatible with Ring Wired Video Doorbell, Safe UL Listed Wired Doorbell 30VA Kit, Easy to Install Door Bell Transformer for Home

Working perfectly with my Ubiquiti G4 Doorbell Pro and mechanical chime.

Update 02/06/25 - I contacted their customer service and they were extremely helpful in solving the issue by issuing a replacement. Replacement is working great.Initial Review - I purchased this transformer to power our Blink doorbell/door cam. It worked fine for the first 2 years, however right after we crossed the two year mark, we received a low battery message from our Blink doorbell. I thought that was strange because it was supposed to keep the doorbell/camera working without using batteries but figured maybe the batteries were low on their own. I swapped batteries but then received another low battery notification a couple weeks later.I went to our crawlspace where I had installed the converter and confirmed that there was still AC power to the unit. I then checked the output terminals and measured that there was no voltage (DC voltage) across the two terminals. Something failed on the internals of the transformer that means it is no longer outputting the required (or any) voltage.The unit is in the crawlspace and hasn't been touched since it was installed and working successfully. Disappointing to see it fail after only 2 years. With no moving parts and no physical impact/use, it feels like it should last much, much longer. Now we're left trying to figure out what to do to replace it after only two years.

Works good, installed yesterday to power a G4 Doorbell Pro. Easy install and good instructions. You can also go on YT and watch installs/setup videos.Time will tell how long this will last, but I'll update if needed.

Nothing fancy going on here. The install was simple, painless and quick as one would expect. The Ring Pro I bought this for fired up without issue and my previously underpowered mechanical doorbell was finally getting enough juice to complete a chime. After I completed the setup in the app everything was good, until it wasn't...maybe a glitch, but five minutes later I got a "poor" for the voltage rating. It was odd since everything was working....and then magically, it resolved itself another 5 minutes later and I haven't had any issues since -- everything is in the green. So maybe I can chalk that up to a Ring-related setup miscue where it was cycling through something as part of the install/setup?Regardless, everything appears to be working perfectly now. I get video almost instantly when I click on the live view (as opposed to having to wait awhile on the Arlo camera we used to use), and everything rings as it should (both the device and our mechanical doorbell). On a side note, as someone else mentioned, there is about a 3 second delay between pressing the Ring button and the mechanical chime actually ringing inside, but I don't believe that is a failure, I just think it has something to do with how the power is relayed.One final note...I had an electrician out for some other work and asked, out of curiosity, what he would charge for the Ring install (since he was already there). He told me that people always have power issues and there's a ton of troubleshooting involved and then quoted me $245. It's really not complicated at all and the instructions were pretty straightforward. He essentially wanted to charge the same amount it would cost to purchase the doorbell -- so there's that, trust in your own abilities for simple tasks like this -- it'll save you money.So overall this is a good purchase, I'm just worried slightly about the reliability given that initial glitch, but since there haven't been any further issues, I guess it's just a waiting game to see if this will hold up for years or crap out in a month.

Perfect

This transformer worked just as advertised. I used it to provide power to a ring doorbell 3 where the battery needed to be recharged almost every 2-3 days. Since putting this transformer in line and powering the ring doorbell 3 via AC, I've not had to recharge the battery since. I'm very satisfied with this particular unit... just note that it does require competent electrical and/or carpentry skills to install this within an existing wall if you want it to be "hidden".