24V AC 40VA Transformer for Wired Doorbells & Thermostats – Hardwired Power Supply Compatible with Ring Video Doorbell Pro/2/3/4, Nest, Ecobee, Honeywell – Easy Install with 40VA Output
Price: $14.99 - $15.99
(as of Sep 26, 2025 16:31:46 UTC – Details)
— **IMPORTANT INSTALLATION & COMPATIBILITY NOTICE** —
This product is a power supply transformer for **WIRED** systems only.
**BEFORE YOU BUY, PLEASE CONFIRM:**
1. Your doorbell or thermostat is designed to be powered by a low-voltage transformer (not plug-in or battery-only).
2. Your device requires 24V AC power and does not exceed a 40VA load.
3. You have existing doorbell wiring in place.
**FULL INSTALLATION MANUAL AVAILABLE IN THE IMAGE GALLERY AND UPON REQUEST.**
VIIVRIA 24V Transformer is specifically designed to optimize the performance of Ring Video Doorbell Wired, Wired Doorbell Plus (Video Doorbell Pro), and Wired Doorbell Pro (Video Doorbell Pro 2). It provides a constant 24-volt power supply, ensuring seamless operation for all Ring devices.
Compatible with a wide range of smart thermostats including Nest, Ecobee, Honeywell, and Sensi, as well as other devices that require a 24-volt power supply, this transformer ensures stable power delivery for multiple devices at once.
Power multiple thermostats and doorbells:
This transformer replaces underpowered units, ensuring all connected devices run smoothly without power issues or interruptions.
Easy to install:
Designed for quick and hassle-free installation, it easily mounts to the electrical box using screws or thread clamps, with clear instructions provided for proper wiring.
Input: 120V AC, 60 Hz;
Output: 24V AC at 40VA.
The perfect solution to power multiple smart devices in your home.
About VIIVRIA:
VIIVRIA specializes in high-quality digital accessories, delivering reliable products for modern homes. We focus on providing durable solutions and exceptional customer service, ensuring satisfaction with every purchase.
Product Dimensions : 2 x 2 x 3 inches; 1 Pounds
Item model number : 130024
Date First Available : July 29, 2024
Manufacturer : UnionD
ASIN : B0DBHDLSC5
Best Sellers Rank: #40,389 in Tools & Home Improvement (See Top 100 in Tools & Home Improvement) #27 in Door Bell Transformers
Customer Reviews: 4.4 4.4 out of 5 stars 111 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); } }); });
CLEAR COMPATIBILITY & USE GUIDE: This 24V 40VA transformer is designed for standard **wired** low-voltage devices. COMPATIBLE WITH: Ring Video Doorbell Pro (1st & 2nd Gen), 3, 4; Nest Hello; Ecobee; Honeywell; Sensi thermostats. NOT FOR: Battery-only doorbells (e.g., Ring Battery Doorbell Plus) or devices requiring over 40VA. *Please check your device’s specs and wiring before purchase*
Reliable Performance: With an input of 120V AC 60 Hz and an output of 24V AC at 40VA, this low-voltage transformer offers reliable and stable power supply. It is designed for residential, commercial, and industrial use, providing safe and consistent performance for multiple thermostats and doorbells simultaneously. Ideal for upgrading or replacing underpowered transformers
Easy to Install: The 24V doorbell transformer is simple to replace and install. It can be screwed, threaded, or clamped to the electrical box, with clear wiring diagrams provided for proper installation, making it easy for both professionals and DIY enthusiasts
Universal Compatibility: In addition to Ring products, this transformer is widely compatible with other popular smart thermostats and doorbells, including Nest, Ecobee, Honeywell, and Sensi. It is also suitable for any device that requires constant 24-volt power, making it a versatile replacement for most North American doorbell transformers
Trusted Brand Expertise: VIIVRIA has been specializing in digital accessories for years, consistently delivering high-quality products and services. We are committed to providing reliable, durable solutions for modern homes, with a focus on customer satisfaction and product performance
Customers say
Customers find the transformer works well and is easy to install. They appreciate its quality, with one mentioning it’s perfect for Ring doorbells, and consider it good value for money.
