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Xwartre

UL Certified Thermostat C Wire 24V Transformer, White Adapter Compatible with Honeywell, Nest, Emerson, Ecobee, Wyze Thermostat and Most Doorbells (26FT Power Cable)

  • Based on 206 reviews
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Availability: 20 left in stock
Fulfilled by Amazon
Arrives Sunday, Jun 7
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Features

  • Excellent QualityUL Certificate, overload latch-off protection, over current and voltage protection, short circuit protection assures your personal health and property safety.Input 120V AC 60Hz 0.2A / Output 24V AC 500mA,PVC ecderon wire with fine copper, no interruption of the live view or motion tracking. The length of the cable is 8m, which is long enough to connect from your outlet to the doorbell along the wall.
  • Widely ApplicableCompatible with most thermostats(Honeywell, Nest, Ecobee, Wyze, Emerson, Sensi), doorbells(Ring, Eufy, Arlo, Logitech, Amcrest, Simplysafe, Remo, SkyBell, Zmodo) and other devices that require 24 volt AC power;
  • Easy to InstallJust run the wire from the socket to the thermostat or doorbell, and the installation can be completed in a few minutes. There is not need to distinguish between positive and negative of the wires;
  • Long CableThe length of cable is 26ft (8m). You can plug the adapter into a socket far away from the thermostat or doorbell. If you don't like the extra wire, you can cut it to a suitable length;
  • ServiceWe provide 24 hours support online. If you have any questions about this power supply, please feel free to contact us whenever.

Description

● Input: 120V AC 60Hz 0.2A, Output: 24VAC 500mA, Length: 26ft (8m).●UL Certified: UL certification passed, stable and durable 24V transformer for thermostats. ● Compatible with: Nest Thermostat Nest Thermostat E Nest Learning Thermostat 3rd gen ecobee Lite Smart Thermostat ecobee3 Smart Thermostat ecobee4 Smart Thermostat Honeywell Home Thermostat Emerson Sensi Thermostat WYZE Smart WiFi Thermostat Hive Smart Thermostat ... ● Connect the Thermostat: 1.Switch off power to your system; 2.Connect either wire of the 24 volt adapter to "C" and the other wire to "R".Rc stands for the cooling system and Rh for the heating system. If the thermostat needs to be connected to other equipment, check the thermostat manual to confirm if any other wires need to be modified; 3.Plug the power adapter into the socket and switch power back on; 4.Verify your thermostat is receiving necessary power. ● Customer Service:We provide 24-hour service. Please feel free to contact us if you have any questions.

Brand: Xwartre


Power Source: Corded Electric


Mounting Type: Wall Mount


Current Rating: 0.2 Amps, 0.5 Amps


Specification Met: UL


Brand Name: Xwartre


Model:


UPC: 740226048980


Manufacturer: Ingers


Unit Count: 1.0 Count


Power Source: Corded Electric


Mounting Type: Wall Mount


Current Rating: 0.2 Amps, 0.5 Amps


Maximum Frequency: 60 Hz


Minimum Frequency: 60 Hz


Item Weight: 11.6 Ounces


Specification Met: UL


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Sunday, Jun 7

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Similar Products

Top Amazon Reviews

    • Works great for Honeywell Thermostats requiring a C-wire when no c wire is available from the system
Exactly what I needed for my Thermostat.
Reviewed in the United States on March 8, 2026 by mthurston
    • Thermostat C wire
works perfect easy to wire as leads are already stripped. I was to install my Amazon smart thermostat in under 30 mins.
Reviewed in the United States on October 15, 2025 by Charles Smail
    • Works to power a Nest Gen 4, if you know what you are doing....
First, this did NOT successfully power the new Gen 4 Nest thermostat, the device continued to say low power. I swapped in the Google nest power adapter which supplies 33.57v of power into a 24v system, which is what the Gen 4 device needed, not the fault of this transformer however. Now on to the review...most HVAC techs are going to tell customers to not use Nest/Ecobee style thermostats because they generate too many sales calls to come back and fix the homeowner's handywork. You need to understand the basics of how the 24v system works, wiring color codes, and how and why your thermostat sends a call to the contactor in the unit for A/C for example. This product does nothing but offer a constant 24v supply to power a fancy thermostat on units too old to have that in place. The C wire that is mentioned frequently is just a common wire that gives the 24 volt power a place to return and complete the circuit. In a forced air/Nat Gas heat and A/C example, you would simply place one of the white wires from this product to the C terminal and one to the RC as the picture on the listing shows. The RC and RH terminals are the two "hot" lines in this example. RH + green runs the fan, RH + Yellow runs the compressor, RH + White runs the Heat, and RC + C powers the fancy thermostat. Your thermostat will combine inputs for you to make everything work, for example RH + Y1/G is the Call to run the AC compressor and air handler fan together to pump that chilly air goodness all over your house. Hope that saved someone a sales call because "this Chinese product dont work good". ... show more
Reviewed in the United States on August 26, 2024 by DIY homeowner
    • The perfect solution.
This is the perfect alternative into having to come off of the main board of the furnace. It was well worth a couple of dollars versus the pulling my hair out, trying to figure out to wire it in Because I am not an HVAC technician
Reviewed in the United States on January 5, 2026 by NATHAN
    • UL listed
It works great, not a single problem
Reviewed in the United States on February 27, 2026 by Jay 5
    • DO NOT BUY/OVERHEATED/MELTING
BEWARE. I installed this today as an auxiliary power to my Nest. I had another plug but I wanted to run a new one so I bought this as the previous was no longer available. After installing just as my other was I left the house for two hours. I hadn’t yet pushed the furniture back in place and when I touched the unit plugged in it was scorching hot and smelled of melting plastic. I immediately unplugged it from the wall but you could hear something moving/rattling around? If you turned it slowly it almost sounded like sand or little balls? I have no idea but I disconnected and put it outside. It was too hot to put in a plastic trash bag. I reinstalled the one I had before and it’s fine, so it’s not my outlet. I have no doubt this could have caused a fire in my home if I’d not realized the issue so quickly. ... show more
Reviewed in the United States on October 31, 2022 by AML
    • Works great with Honeywell smasrt T9 thermostat.
Works great with Honeywell smasrt T9 thermostat. I drilled thru wall and into medicine cabinet where there was an outlet.
Reviewed in the United States on February 8, 2026 by muckamuck
    • Working well
These work well for systems without a C-wire. They keep daily history for a week and a monthly history for the year. Schedules are easy to manage and the thermostat is sufficiently accurate. It seems like the early start setting is for the heat to turn on 30 minutes before reaching desired temperature instead of measuring and accounting for the heating speed of your house. The wifi setup is straightforward and the signal is reliable in my circumstances. ... show more
Reviewed in the United States on February 7, 2026 by Andrew Applegate

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