Video Doorbell Power Adapter, 24V 500MA Doorbell Transformer,for Most Versions of Ring Doorbell and Thermostat (10M extension cable Black)

Great item. Easy to install and works perfectly

Works well with Eufy S330 doorbell. Powers the Eufy doorbell, the original push door button and the original external chime.Other reviewers are right, there is a small hum from the transformer.Otherwise seems okay

This is the second one of these I’ve had now after accidentally cutting through the first one when opening the garage door. The length of the cable is great as it allows us to feed it through to outside and keep it tidy along the edges of our garage. Installation is simple, just screw the 2 attachments onto the back of your ring doorbell using the screws already on the doorbell and then plug it in. This will only trickle charge however so give your ring doorbell a good charge before hand and this will just prevent the battery going down rather than to charge it up. The only issue I’ve found with this one is the noise, it has a slightly annoying humming/buzzing sound coming from it which my old one didn’t have, luckily for us it’s in the garage so we don’t hear it from the house, otherwise I would send it back. I’m guessing this must be a faulty one given that my old one of the same brand didn’t make this noise, albeit I have read other reviews from people who have mentioned the same.

Power supply has no faults and worked straight out of the box. It's 24 volts and it's powering a video doorbell. It's silent in operation and runs slightly warm. I'm very satisfied with the unit.

Started making burning spell after an hour of use and eventually broke down. Poor build quality and inadequate power supply to the ring battery. It did not work with Ring video door bell and while it is easy to install, it did not last.

The power supplied charges the doorbell nicely. easy to install.

Works perfectly don’t need to keep charging doorbell

ok so it doesn't work , but thats apprently because you need a special Risistor in the circuit to make it work. and also to make it safe!!Ive ordered a risistor and will let you know if it works