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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 202 reviews
Condition: New
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This item's return window has been extended for the holiday season: FREE refund/replacement until Jan 31, 2026

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Availability: Only 1 left in stock, order soon!
Fulfilled by Amazon
Arrives Dec 6 – Dec 17
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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


Product Dimensions ‏ : ‎ 2.2 x 1.8 x 0.72 inches; 11.6 ounces


Item model number ‏ : ‎


Date First Available ‏ : ‎ July 18, 2020


Manufacturer ‏ : ‎ Ingers


Best Sellers Rank: #93,004 in Tools & Home Improvement (See Top 100 in Tools & Home Improvement) #62 in Door Bell Transformers


#62 in Door Bell Transformers:


Customer Reviews: 4.3 4.3 out of 5 stars 202 ratings


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Dec 6 – Dec 17

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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Top Amazon Reviews

    • Must have for non. HVAC BOILER
This is must have to get my boiler working. Is compatible with the Emerson Sensi programmable thermostat. The price is very affordable. My thermostat is up and running. We had an electrician install the thermostat. The wire is quite lengthy.
Reviewed in the United States on October 7, 2025 by Mr. DJ
    • Works for Nest thermostat
It works on my Google Nest thermostat. My thermostat connection doesn't have C wire so I bought this, followed the instruction and it powers the Nest.
Reviewed in the United States on October 28, 2025 by The A
    • 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
    • Heater works for Nest thermostat 3 but no AC
Review Image by MG MG
So the heater works as expected but no AC. I have tried moving one of the cables from Rc to Rh but that didn't worked either. If anyone have some tips I would really appreciate it
Reviewed in the United States on April 7, 2024 by MG MG
    • Reliable Product
Does the job as advertised
Reviewed in the United States on November 6, 2025 by Michael Willner
    • Works great, no issues just plug an play
Works great, I bought multiple just in case one goes out and I need to replace it. I'm not a fan of living without heat. I have Boiler heat and I plug in the to wires along the C wires from the plug and I'm all set.
Reviewed in the United States on April 21, 2025 by Amazon Customer
    • Works
Works fine with my GE CYNC Smart Thermostat. I followed the wiring diagram from the product pictures, I don't think it came with any instruction manual.
Reviewed in the United States on January 21, 2023 by Cedric P.
    • 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

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