24V Transformer C Wire Adapter for All Versions of Ring Doorbell, Eufy E340, Wyze Video Doorbells, and Compatible with Thermostat Nest 1st/2nd, Ecobee, Honeywell, Sensi Power Supply 8M(315 inch)

Works with Eufy E340 Doorbell. Charges doorbell and keeps it around 90% for moderate use.

The item was as advertised and works. The real test will be how long it works, but so far so good. I had an older nest thermostat that I wanted to hook up to a Jotul propane stove. The propane stove uses a 2 wire thermostat, so to use the Nest I needed to power it. The power supply was easy to hook up and so far it works fine.

Works well with Ecobee thermostat

The adapter works as advertised.

I stop work the first day I used it.

Great item! I used it to replace an older thermostat with a "smart" thermostat. It comes with more than 25' of wire so it's easy to find an outlet. Installation was easy, though the diagrams could be better.

Basic instructions were included. Very long cord was nice to have. Worked out well.

This transformer has a very noticeable hum. It was loud enough to make me search for it in the middle of the night.

Funciona perfectamente

Muy funcional, es tal cual como se muestra en las imágenes.

Funciona bien con el Ring y llego muy rápido y todo muy bien

Ya no pude regresarlo, no lo pude instalar dentro del tiempo para devolución y cuando lo hice el transformador no servía