MEROM 24V 500mA 26ft C Wire Transformer Adapter Compatible with Nest/Ecobee/Sensi/Honeywell Thermostat, Nest Hello Doorbell/Ring Door Bell Power Supply
Price: $129.99 - $13.99
(as of Nov 29, 2025 16:45:38 UTC – Details)
Description:
MEROM 24V500MA transformer, C wire doorbell / thermostat Power Supply
Special design and high quality materials ensure that the adapter is kept in low temperature to charge safely
and its low energy consumption conform to the US Energy Star VI.
Product Parameters:
Input: 120V AC 60Hz 0.2A
Output: 24V 500mA.
Color: white
Extra Long Cable
● The cable is 315 inches long, Don’t worry about the socket at all distance from honeywell Smart Wifi thermostat, It can work perfectly for your doorbell.
Apply To Equipment
● Thermostat: Nest, Ecobee, Honeywell, Emerson Sensi, Hive .
● Doorbell : Ring, Nest Hello, Skybell Aug,It can also power other 24V devices .
Easy To Install
● Use this adapter, It can be done in a few minutes, Assembly from wall outlets to doorbells and temperature regulators No need for existing doorbells or wiring, Easy to install, When the battery is low, You can plug the adapter directly into the socket and then turn on the power. You can easily power your products .
● How to 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”. 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.
Security
●FCC CE ROHS certification, Focus on producing high quality power adapters, Noiseless, low temperature operation, No spontaneous combustion, no explosion, Provides stable output for you.
Package Dimensions : 3.94 x 3.35 x 2.24 inches; 12.31 ounces
Date First Available : August 5, 2020
Manufacturer : MEROM
ASIN : B08FB31DN6
Best Sellers Rank: #389,636 in Tools & Home Improvement (See Top 100 in Tools & Home Improvement) #156 in Door Bell Transformers
Customer Reviews: 4.3 4.3 out of 5 stars 341 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); } }); });
UNIVERSAL DESIGN: US power cable Powers your popular smart thermostats((Nest, 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 24 volt power for operation, enables you to charge your devices safely
EASY INSTALLATION: Assemble along the wall from your outlet to the doorbell and thermostat without the existing wiring. Super easy to install that can be able to set up in minutes
CONVENIENT: With this C Wire Adapter, you could able to charge your doorbells and thermostats without any worry about interrupting, which makes it a wonderful ring doorbell transformer. You don’t need to take off the battery inside the doorbells and just connect this transformer, keep doorbells charging any time you want
LONG CABLE: Our cable is 8 M(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 24 V / 500 mA, a perfect tool to meet your needs
Customers say
Customers find the transformer adapter works well with various devices, including Nest thermostats and Ring Doorbells, and appreciate its easy installation and good value. The product receives positive feedback for its quality and wire length, with one customer noting it has plenty of extra wire. However, the voltage output receives mixed reviews, with one customer reporting only 9 volts instead of the expected 24V. Moreover, the instruction manual quality is mixed, with some customers finding them invaluable while others report no instructions. Additionally, the wire quality is concerning, with multiple customers noting that the ends are too flimsy.
