---
product_id: 69747978
title: "AC 24 Volt Transformer, C Wire Adapter, Compatible with All Versions of Ring Doorbell and Thermostat for Ecobee,Sensi and Honeywell, 315\" Long Cable"
brand: "viivria"
price: "472 DH"
currency: MAD
in_stock: true
reviews_count: 13
category: "Viivria"
url: https://www.desertcart.ma/products/69747978-ac-24-volt-transformer-c-wire-adapter-compatible-with-all
store_origin: MA
region: Morocco
---

# 315-inch (8m) ultra-long cable 24V AC output for stable power Universal compatibility with smart devices AC 24 Volt Transformer, C Wire Adapter, Compatible with All Versions of Ring Doorbell and Thermostat for Ecobee,Sensi and Honeywell, 315" Long Cable

**Brand:** viivria
**Price:** 472 DH
**Availability:** ✅ In Stock

## Summary

> ⚡ Power your smart home effortlessly, no compromises.

## Quick Answers

- **What is this?** AC 24 Volt Transformer, C Wire Adapter, Compatible with All Versions of Ring Doorbell and Thermostat for Ecobee,Sensi and Honeywell, 315" Long Cable by viivria
- **How much does it cost?** 472 DH with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.ma](https://www.desertcart.ma/products/69747978-ac-24-volt-transformer-c-wire-adapter-compatible-with-all)

## Best For

- viivria enthusiasts

## Why This Product

- Trusted viivria brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Unmatched Reach:** 315-inch cable lets you hide wires neatly from distant outlets—perfect for renters and older homes.
- • **Safe & Certified:** Certified battery backup solution ensures safe, continuous power without removing your thermostat.
- • **Reliable & Stable:** Consistent 24V/500mA output prevents device reboots and battery drain, keeping your smart home always online.
- • **Effortless Power Upgrade:** Plug-and-play C wire adapter powers all major smart thermostats and Ring doorbells without rewiring headaches.
- • **Hassle-Free Installation:** No polarity worries, quick setup in minutes—professional-grade quality backed by expert support.

## Overview

This AC 24 Volt Transformer with a 315-inch cable is a versatile C wire adapter designed to provide stable, continuous power to all versions of Ring doorbells and popular smart thermostats like Ecobee, Sensi, Honeywell, and Nest. Its ultra-long cable enables flexible, clean installations from distant outlets, ideal for homes lacking existing wiring. Certified for safety and delivering a reliable 24V/500mA output, it prevents battery drain and device interruptions, making it the perfect upgrade for smart home enthusiasts seeking convenience and peace of mind.

## Description

AC 24 Volt Transformer, C Wire Adapter, Compatible with All Versions of Ring Doorbell and Thermostat for Ecobee,Sensi and Honeywell, 315" Long Cable - desertcart.com

Review: Great alternative power source - Super long cable (315 inches / ~26 feet / 8 meters) — This is the standout feature. You can route it from a distant outlet (garage, basement, or indoor wall) to your outdoor doorbell or upstairs thermostat without needing extensions or worrying about reach. Many shorter adapters (10-16 ft) fall short in real homes; this one gives you flexibility for clean, hidden installs along baseboards or exterior walls. Works seamlessly with all Ring Video Doorbell versions (including Pro, 2, 3/4, Plus), plus smart thermostats like Ecobee, Sensi, Honeywell, Nest (1st/2nd gen), and others needing 24V AC. Output is typically 24V/500mA, which matches or exceeds what these devices require for stable operation—no underpowering issues that cause random reboots or battery drain. If your setup lacks existing doorbell/transformer wiring or a C wire, and you want something affordable, long-reaching, and dead-reliable, grab this. It’s especially great for renters, older homes, or anyone avoiding wall modifications. Saved me from constant recharges and false alerts highly recommend for the price and convenience.
Review: Easy install and works. - Easy install on a Sensi 2 thermometer. If you have a thermostat, usually older style, that uses battery and want to upgrade to a smart thermometer but dont have power coming to your thermostat like i did this will give you the power you need. My steam boiler only has two wires coming from the basement to the front of the house living room. Running a new cable would entail opening up walls or ceilings so i did some research and whoever doenst have an extra wire running up, this is the easiest solution. Some houses when they were wired, they ran three wires and only two were used you can use the spare one to power your smart thermostat or you can use the fan wire too, i did not have either. I chose a nearby outlet and decided to run the wire through the wall to make it look neat. Installed a ln outlet next to a light switch and looks good in my opinion. Power adapter plugs in and you just wire the ends to your RC and C terminals thats it youre done, polarity doesnt matter. Made a wooden frame for the thermostat using original wood and lath that was used to construct the house, Looks cheesy but i like it.

## Features

- WIDELY USE: US power cable Powers your popular smart thermostats((Nest 1st/2nd, Ecobee, Honeywell, Sensi) and doorbells(Ring Video Doorbell, Ring Video Doorbell 2 & Ring Video Doorbell Pro,Nest Skybell , etc.) and other devices that require constant AC 24 volt power for operation, enables you to charge your devices safely.
- EASY TO USE:Assemble along the wall from your outlet to the doorbell and thermostat without the existing doorbell or wiring. Easy installation and be able to set up in minutes.
- LONG CABLE:Our cable is 8M(315 inch) long and you do not worry about the distance between the socket and the Honeywell Smart Wifi Thermostat. This allows you to easily plug it into an electrical outlet inside or outside your house.
- SAFE AND CONVENIENT :Our battery backup has gotten certificate. A quick fix to the problem of "Low batter" you can charge it directly(plug adapter into outlet and power up). that means you don't need to remove your honeywell thermostat in order to charge up the battery.With an AC output of 24V/500mA, a perfect tool to meet your needs.
- WHAT YOU GET- 1. High quality accessory 2. 180 Days money-back 3 . Professional customer service. VIIVRIA has a professional team which has been specialized in designing and manufacturing transformers for years, improving technologies to meet consumers' needs.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07DJ7RHS5 |
| Batteries Included? | No |
| Batteries Required? | No |
| Best Sellers Rank | #1,656 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #2 in Door Bell Transformers |
| Customer Reviews | 4.5 4.5 out of 5 stars (6,665) |
| Date First Available | June 1, 2018 |
| Included Components | AC 24 Volt Transformer with 315" Long Cable |
| Is Discontinued By Manufacturer | No |
| Item Package Quantity | 1 |
| Item Weight | 11.3 ounces |
| Item model number | 1 |
| Manufacturer | 1 |
| Part Number | 1 |
| Product Dimensions | 2.17 x 3.94 x 3.15 inches |
| Voltage | 24 Volts |

## Product Details

- **Brand:** VIIVRIA
- **Current Rating:** 0.5 Amps
- **Mounting Type:** Wall Mount
- **Power Source:** Corded Electric
- **Product Dimensions:** 2.17"D x 3.94"W x 3.15"H

## Images

![AC 24 Volt Transformer, C Wire Adapter, Compatible with All Versions of Ring Doorbell and Thermostat for Ecobee,Sensi and Honeywell, 315" Long Cable - Image 1](https://m.media-amazon.com/images/I/61ds7G4Ou0L.jpg)

## Questions & Answers

**Q: Would 24v damage the nest hello? it only need 18v, not 24v.**
A: I been using it for around 3 months with no issues with the Nest Hello.

**Q: Does this work with Nest Hello?**
A: Yes it does work with the nest, I'm using it with mine and a pellet stove

**Q: The “ul” label is no longer included on the unit. is the unit being shipped longer ul certified?**
A: I really wish people would just not respond if they don't know the answer...

Anyway, I just moved and dug my Ring doorbell out of a box along with this transformer. When I installed it, I included a huge 250 Ohm resister for some reason, got the recommendation online. Regardless, the Ring was not charging, so I tested the voltage from the transformer and got 25 volts consistently, not the 24 volts it claims, and not the 8-24 volts my door bell wanted. Sure, I got an extra volt for free, but I don't know what that will do to electronics without knowing what kind of regulator they are using, if any. So, since it provides more voltage than stated, it might not be approved anymore - I don't know. I bought this in late 2019.

**Q: Will this work with the vine 610 thermostat**
A: This will work with any thermostat.  It simply provides the 24V power needed assuming your tstat wire and doesn’t have the additional wires for 24v power.  Most furnaces have the 120/24V transformer, but older homes tstat wire never had enough conductors.  Newer homes should.  Regardless, yes, this transformer with work.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Great alternative power source
*by S***. on February 1, 2026*

Super long cable (315 inches / ~26 feet / 8 meters) — This is the standout feature. You can route it from a distant outlet (garage, basement, or indoor wall) to your outdoor doorbell or upstairs thermostat without needing extensions or worrying about reach. Many shorter adapters (10-16 ft) fall short in real homes; this one gives you flexibility for clean, hidden installs along baseboards or exterior walls. Works seamlessly with all Ring Video Doorbell versions (including Pro, 2, 3/4, Plus), plus smart thermostats like Ecobee, Sensi, Honeywell, Nest (1st/2nd gen), and others needing 24V AC. Output is typically 24V/500mA, which matches or exceeds what these devices require for stable operation—no underpowering issues that cause random reboots or battery drain. If your setup lacks existing doorbell/transformer wiring or a C wire, and you want something affordable, long-reaching, and dead-reliable, grab this. It’s especially great for renters, older homes, or anyone avoiding wall modifications. Saved me from constant recharges and false alerts highly recommend for the price and convenience.

### ⭐⭐⭐⭐⭐ Easy install and works.
*by G***O on October 21, 2025*

Easy install on a Sensi 2 thermometer. If you have a thermostat, usually older style, that uses battery and want to upgrade to a smart thermometer but dont have power coming to your thermostat like i did this will give you the power you need. My steam boiler only has two wires coming from the basement to the front of the house living room. Running a new cable would entail opening up walls or ceilings so i did some research and whoever doenst have an extra wire running up, this is the easiest solution. Some houses when they were wired, they ran three wires and only two were used you can use the spare one to power your smart thermostat or you can use the fan wire too, i did not have either. I chose a nearby outlet and decided to run the wire through the wall to make it look neat. Installed a ln outlet next to a light switch and looks good in my opinion. Power adapter plugs in and you just wire the ends to your RC and C terminals thats it youre done, polarity doesnt matter. Made a wooden frame for the thermostat using original wood and lath that was used to construct the house, Looks cheesy but i like it.

### ⭐⭐⭐⭐⭐ GREAT "C" WIRE FIX
*by E***E on December 9, 2025*

NEEDED A "C" WIRE FOR MY WIFI THERMOSTAT. THIS WAS RECOMMENDED TO SOLVE THE PROBLEM. IT WORKS GREAT. PRICE WAS GOOD AND IT COMES WITH 26 FEET OF WIRE. I DO RECOMMEND THIS PRODUCT.

## Frequently Bought Together

- AC 24 Volt Transformer, C Wire Adapter, Compatible with All Versions of Ring Doorbell and Thermostat for Ecobee,Sensi and Honeywell, 315" Long Cable
- Ring Video Doorbell Wired (newest model), Use Two-Way Talk, advanced motion detection, HD camera and real-time alerts to monitor your front door (wiring required)
- Ring Chime

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*Product available on Desertcart Morocco*
*Store origin: MA*
*Last updated: 2026-02-20*