Newhouse Hardware 30TR Door Bell Transformer, 16v 30va, Compatible with Ring Video Doorbell Pro, UL Certified

Worked properly for Unifi G4 Doorbell. Easy change out if installed "hanging" off the cover plate like mine was.

First off, transformer worked out of the box after I installed it. I purchased this in April 2020. It's still working after a more than a week. (I was afraid that it would have issues reading other reviews, but this transformer seems to be performing perfectly. I will update this review if it breaks down, but if I don't, that means it's still running)Backstory:I was excited to install my Nest Hello doorbell camera. I even checked before I bought it, that my transformer was sufficient to power it. After I installed it, the doorbell worked! But something was wrong, I realized my Nutone mechanical chime wasn't working. Are the wires in the way of the mechanism? No. After research, I found out that my existing 16v 10a transformer was not enough to power my mechanical doorbell.Unofficial "fixes" included taking off the limiter (not recommended) or getting a 24V transformer. After searching for solutions, the consensus that the safest solution was to get a transformer with a higher VA rating. I originally wanted to purchase the Nutone 16v 30va transformer but it would take longer and shipping wasn't free (also a lot of the pictures showed dented transformers) so I bought this.Review:Cosmetically, it looked just like my old transformer just bigger. Wires were slightly thinner but still pretty solid. I've read about transformers getting too hot while in operation. This got warm but nothing out of the norm. I know looks isn't everything, but it is a factor for me.Functionality. It gets the job done. After installing it, time for the moment of truth. Pressed the doorbell and now it's a LOUD Ding! AND Dong! I've heard some solutions only get a Ding without the Dong.Before getting this I wasn't sure if installing the transformer is worth the hassle. I thought maybe I don't need the mechanical doorbell. After installing it, I'm glad I did.1. Mechanical doorbells are a nice physical real sound and not simulated electronic sound. Just sounds classy. It is distinguishable from other noises or sounds in the house.2. No delay. Once pressed the door bell rings and everyone in the house can hear it.3. The reason why the mechanical doorbell didn't work before is because there was a voltage drop, when the doorbell was pressed. I figured that can't be good for the doorbell camera in the long term. With a new transformer, I can have a peace of mind knowing there is proper voltage going to the doorbell camera.If you have a 16v 10va transformer, I highly recommend upgrading it to a 16v 30va transformer like this.

Working very well with multiple door bells.

Arrived in a box that was in a plastic bubble envelope. The wires coming out are in a plastic 1/2 inch thread with a locknut. I mounted the transformer on the side of the box with the locknut and wired it up. Working fine with my eufy wired doorbell. Working fine and lukewarm to the touch.

Amazon send me this transformer 3 times before one of them wasn't a dented mess. They were all sent in envelopes even though I asked Amazon to send it in a box. The actual transformer is a good quality part and mine puts out about 17.8 volts AC (rated at 16 volts AC). The current draw is only about 3.3 watts which is surprisingly low. The transformer does get pretty warm, as all transformers do. If yours is in an attic or closet it will get hot to the touch. The manufacturer states there is a thermal switch so if it would overheat it should shut off per the manufacturer.

Fixed our doorbell

Cheap china junk. Installed less than a month and it emits a loud annoying hum. Vibrates so much, all the interior parts of chime vibrate

I had a standard transformer and it had a buzz since we moved it that got worse when I added a smart doorbell. This completely got rid of the annoying buzz, was easy to install, fit rid in the same spot.