24 Volt Doorbell Power Adapter - 16.4ft Long C Wire Adapter, Doorbell Transformer Fits Ring, Nest Hello, Wyze, Eufy Video Doorbells and Sensi,Nest,Honeywell Thermostat(Black)

Had to use a cable puller to run it up my wall which was a chore but it all was worth it when I’m able to plug in my Honeywell T9 and get power to run it when my old boiler system didn’t have any C wire. I connected the two ends of this power adapter to RC and C. My boiler heating system connected to W and RH. As soon as I plugged this into the wall it powered right on and worked perfectly. Had to manually add my boiler lines because it’s an older zone valve system but this device worked perfectly.

Wonderful product, straight wire, it doesn't matter which side is which, both side does the same thing, easy on installation. The wire is very long. It would have been better if the wire had been 10' shorter. But this transformer keeps the Ring camera charged all the time. Love it. very functional. connectivity is eased.

Works good

Works on my Nest Thermostat. I only have 2 wires (red & white). Wire with white stripe from power supply went into my R connection along with furnace Red wire. Other wire (just black) went into C connection. Thermostat set up without issue after that. Time will tell if it actually charges the batteries in the Nest thermostat.

Best part is you never have to remove the fragile cover again. I’d broken several over the years. Now have the screw in and no need to remove faceplate!!! Works as described. Battery stays in unit so if a vandal cut power line unit still works. I cut the line to length and held in place with staples. Easy to install and when you check battery in app it will say hardwired. It also slowly charges battery.

Did not work. Had no power from the start.

It worked perfectly on my mom Ring doorbell.

Awesome idea

no me gusto porque necesitaba uno de 24 v y al ponerlo no servia y lo medimos con un voltimetro y solo da 16v.