Thermostats 24 Volt Transformer C Wire Power Adapter for Nest 3rd Gen, Ecobee, Honeywell WiFi Thermostats, Power Supply for Nest Hello, Ring Smart Doorbells Chime
Price: $12.99 - $16.99
(as of Oct 30, 2025 15:10:33 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
Best Sellers Rank: #28,392 in Tools & Home Improvement (See Top 100 in Tools & Home Improvement) #30 in Home Thermostat Accessories
Customer Reviews: 4.1 4.1 out of 5 stars 423 ratings var dpAcrHasRegisteredArcLinkClickAction; P.when(‘A’, ‘ready’).execute(function(A) { if (dpAcrHasRegisteredArcLinkClickAction !== true) { dpAcrHasRegisteredArcLinkClickAction = true; A.declarative( ‘acrLink-click-metrics’, ‘click’, { “allowLinkDefault”: true }, function (event) { if (window.ue) { ue.count(“acrLinkClickCount”, (ue.count(“acrLinkClickCount”) || 0) + 1); } } ); } }); P.when(‘A’, ‘cf’).execute(function(A) { A.declarative(‘acrStarsLink-click-metrics’, ‘click’, { “allowLinkDefault” : true }, function(event){ if(window.ue) { ue.count(“acrStarsLinkWithPopoverClickCount”, (ue.count(“acrStarsLinkWithPopoverClickCount”) || 0) + 1); } }); });
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 find the transformer to be good quality and reasonably priced. However, the functionality receives mixed feedback – while some say it works like a charm, others report it stops working after one day. Installation is also mixed, with some finding it easy while others note the lack of instructions. Moreover, customers report issues with voltage, showing no output, and durability concerns, with some units breaking after one day of use.
