Thermostats 24 Volt Transformer C Wire Power Adapter for Nest, Ecobee, Honeywell WiFi Thermostats, Power Supply for Nest Hello, Ring Smart Doorbells Chime
Original price was: $20.99.$17.99Current price is: $17.99.







Price: $20.99 - $17.99
(as of Jan 18, 2025 22:53:33 UTC – Details)
Product Description



How to Connect?
1. Switch off the power.
2. Connect the wire from the adapter to the terminal Rc (or R) and C (the wire is non-polarity).
(You need to use included jumper and connect from “RH” to “RC” terminals,if HVAC system has a cooling.)
3. Plug the adapter into the socket and switch the power back on.
4. Check your thermostat is receiving necessary power.
Input voltage: 120 V/AC, 60 HzOutput voltage: 24 V, 0.5 A/ ACSize (L*W): 1.9 in x 1.6in

Continuous Power Supply
You dont need to replace the battery all the time. No more low battery concerns. The thermostat will always turned on for your safety.

Ultra Long Cable
16.4ft long cable will compatible with various indoor/outdoor environment. Plug in anywhere and the house stays tidy.

Safety Protection
Certificated quality, the adapter has a thermo sensor that could efficiently protect it from overheating. Capable for longtime operation.

Package Dimensions : 3.9 x 3.39 x 2.24 inches; 11.36 ounces
Item model number : 001
Date First Available : September 8, 2022
Manufacturer : ChooKaChoo
ASIN : B0B8RWF4VQ
Country of Origin : China
Widely Match – 24v universal US power cable powers popular smart thermostat. Compatible with Nest, Ecobee, Honeywell, Emerson, Ecobe4 Smart WiFi thermostat. Continuously converts 110/120v to 24volt 500ma.
Quick and Convenient – “Low battery” issues is solved. The adapter is a quick and convenient way to charge your smart thermostat continuously. Now get rid of all battery issues and with no more interrupt or any safety concerns.
Certificated Safety Adapter – A certificated battery backup is stable and sturdy for years use. A waterproofed 16.4ft cable is long enough for you to put the thermostat anywhere higher or lower on your wall.
Easy to Install and Maintain – Assemble along the wall from your indoor outlet to the thermostat. The non-polarity wire is much easier for quick installation.
What You Get – 1 transformer adapter with 10 cable clips. 30-day money back. 24/7 professional service team. Contact if you have any questions.
Customers say
Customers have different views on the functionality and installation process of the HVAC control thermostat.
AI-generated from the text of customer reviews
8 reviews for Thermostats 24 Volt Transformer C Wire Power Adapter for Nest, Ecobee, Honeywell WiFi Thermostats, Power Supply for Nest Hello, Ring Smart Doorbells Chime
Add a review
Original price was: $20.99.$17.99Current price is: $17.99.
Sam Fowler –
Works great
I wonder if this is a frequently returned item because it takes a small amount of fiddling with the wiring. Iâm sharing my photo because a photo from a different review was very helpful to me. I installed in about 5 minutes. Only tip I would add: when you slap the nest face back on it and plug it in, just give it a minute to figure out that it has power. My batteries were low and shut off the face while I was installing this product. I was worried I shorted it or something because it became unresponsive but it just needed to gain some âjuiceâ and wake up.
Jay –
Great product
I got these for my google nest thermostats. They work great for getting the power needed and you donât have to mess with the c wire adapter at the furnace.
Jose Figueroa –
It works!
Works as advertised. Easy installation.
Sarah Mastriani-Levi –
Works, but it took some finagling!
Works, but it took some finagling! This took several tries of removing and re-wiring until all of the connections worked. But now it’s working great. This was a perfect solution for a unit with a missing C wire. The key was wrapping part of the split wire with the existing A wire (2 wires in A port), and the other into the C port.
Dave –
No output voltage
does not work. put a meter on the output and reads 0 volts.Junk
Renee Young –
Works perfectly
Purchased this to use with the Honeywell T9 Smart Thermostat (due to no C wire, old 2 wire heat only furnace). Works like a charm!!
Amazon Customer –
Works as described
Needed to power my thermostat so it would be wifi capable and this worked
Tarren Brady –
Works kinda
Had to rig it quite a bit to make it work. I finally managed something together, but even now my system gives an error because the cord isnt 100% working