24VAC 40VA Plug in Transformer,Doorbell Transformer Compatible with All of Doorbell，Nest, Ecobee, Sensi and Honeywell Thermostat
Price: $16.99 - $17.59
(as of Nov 14, 2025 23:11:42 UTC – Details)
Product description
24VAC 40VA Plug in Transformer,Doorbell Transformer
Product Dimensions : 2.1 x 2.5 x 3.8 inches; 1.54 Pounds
Item model number : HU-XI-22
Date First Available : March 14, 2020
Manufacturer : WUYELIN
ASIN : B085WPNC29
Best Sellers Rank: #32,699 in Tools & Home Improvement (See Top 100 in Tools & Home Improvement) #23 in Door Bell Transformers
Customer Reviews: 4.5 4.5 out of 5 stars 1,147 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); } }); });
Doorbell/Thermostat power solution: 24Vac 40VA wall transformer, using this Transformer to replace and upgrade the insufficient power transformer, can provide sufficient power for your thermostat and doorbell, save the trouble of frequent battery replacement
Specification: input voltage: 120 VAC, 60Hz; Output voltage: 24V, 40VA ,No-load output voltage: 26.6V,SAFE AND STABLE auto-resetting (PTC) fused secondary, LED green power indicator
Compatible With: This transformer compatible for Honeywell, for Nest, for Ecobee, and Sensi smart thermostats; Also compatible with Video Doorbell, Video Doorbell 2, Video Doorbell Pro, for Nest Skybell Doorbell。Note: The brand above is only for demonstrating compatibilityyy
Easy to install:Output with screw terminals, You can freely cut the connecting cable and arrange the cable according to the length you need to make the installation simple and beautiful
Multimeter test products: When using a multimeter to test products, pay attention to using an AC voltmeter or multimeter to test the output voltage value, and use a voltage tester to measure accurate voltage output data. The no-load voltage output measured by the multimeter is about 26.6-28V, which is normal and does not affect any use.
Customers say
Customers find the transformer works well for doorbells, including the Nest Doorbell camera, and appreciate its ease of installation and good quality. Moreover, the power source receives positive feedback for compatibility with Ring Video Doorbells, and customers consider it good value for money. However, the voltage output receives mixed reviews, with several customers reporting no voltage output, and the transformer’s lifespan is also mixed, with some customers reporting it didn’t last a year. Additionally, customers disagree on the wiring flexibility.
