24VAC 40VA Plug in Transformer,Doorbell Transformer Compatible with All of Doorbell，Nest, Ecobee, Sensi and Honeywell Thermostat

Item as described. Easy to install and works great.

It was what I needed , works fine.

It’s pretty good product.A bit heavy, but looks and works well.

My last AC transformer was way under voltage, this one fixed my doorbell. Running this over 50ft of 18 gauge (new) & 75ft of cat-3 cable (old) joined together to power a Ubiquiti G4 Doorbell pro. Works great :-)This transformer is sold as 24VAC but actually outputs 29VAC when measured by multimeter.The doorbell is working great since installing, but took one star off for being over 10% out of spec. Buyer beware, this could destroy poorly built electronics that can’t handle a little more than 24V

My ring doorbell went offline. I found out that the transformer was not supplying the correct voltage to it. With this one I got the correct voltage to it and it works great now.

I bought this because the transformer for our current doorbell, hung "conveniently" waaaay up in the attic, was only about 12 volts (according to my multimeter). The Arlo Video Doorbell will NOT work with a 12 volt transformer, it requires a 24 volt transformer.1) I bought 18/2 wire at Home Depot for the installation2) the transformer comes with a bolt in it. That didn't work for me as the outlet I needed to use is a GFCI outlet which doesn't have a middle bolt hole, so I had to use a small (6 inch) extension cord from the GFCI outlet to the transformer. The bolt on this transformer is NOT easily removeable as the housing of the transformer blocks the bolt's removal. If your outlet doesn't have have a spot for the bolt, you will need a workaround like I used.3) the Arlo Video Doorbell has specific instructions for using a plug-in transformer instead of the transformer found in my attic. You MUST, and I quote, "select None as the Traditional Chime option to avoid any damage to your plug-in AC power adapter".4) this plug-in transformer will not require the Power Kit that comes with the Arlo Video Doorbell unless you use a chime along with the Video Doorbell.

I didn't have a doorbell at the front, but instead had a very old (in my opinion) calling system. So I wanted to put in a camera doorbell. The problem was I only had a cut up ethernet line going to the front door with only 2 pairs usable. I figured I could use this with my newly aquired Reolink doorbell camera. I used a combined pair of the mentioned wires for one side of the power and the other combined pair for the other side. So far so good.PLEASE NOTICE THE product mentions that under NO LOAD the voltage WILL be higher than its intended use case.I've seen others mention that these output too many volts in their reviews. This is totally fine and they need to remember that under no load (no amps being pushed through) the voltage will be higher than normal rating. Mine was 27V as I tested after no load. I didn't test after my camera was installed but it should be around the rated 24 volts!

I bought the transformer 2 years ago. It worked well for 2 years but it has failed. I have no idea why it stopped working. A 2-year longevity is disappointing. For that reason, I would not recommend the product.