---
product_id: 202025118
title: "24VAC 40VA Plug in Transformer,Doorbell Transformer Compatible with All of Doorbell，Nest, Ecobee, Sensi and Honeywell Thermostat"
brand: "wuyelin"
price: "฿2566"
currency: THB
in_stock: true
reviews_count: 8
category: "Wuyelin"
url: https://www.desertcart.co.th/products/202025118-24vac-40va-plug-in-transformer-doorbell-transformer-compatible-with-all
store_origin: TH
region: Thailand
---

# 40VA high power output LED power indicator Plug-in wall mount design 24VAC 40VA Plug in Transformer,Doorbell Transformer Compatible with All of Doorbell，Nest, Ecobee, Sensi and Honeywell Thermostat

**Brand:** wuyelin
**Price:** ฿2566
**Availability:** ✅ In Stock

## Summary

> ⚡ Power your smart home like a pro — never miss a beat!

## Quick Answers

- **What is this?** 24VAC 40VA Plug in Transformer,Doorbell Transformer Compatible with All of Doorbell，Nest, Ecobee, Sensi and Honeywell Thermostat by wuyelin
- **How much does it cost?** ฿2566 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.th](https://www.desertcart.co.th/products/202025118-24vac-40va-plug-in-transformer-doorbell-transformer-compatible-with-all)

## Best For

- wuyelin enthusiasts

## Why This Product

- Trusted wuyelin brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Effortless Installation:** Screw terminal outputs with customizable cable length for a clean, professional setup.
- • **Safe & Stable Operation:** Built-in auto-resetting PTC fuse and LED indicator ensure protection and real-time power status.
- • **Optimized Voltage Output:** No-load voltage peaks at 26.6V for reliable performance without compromising device safety.
- • **Reliable 24VAC 40VA Power:** Delivers consistent, robust power to your smart thermostats and doorbells, eliminating battery hassles.
- • **Universal Smart Home Compatibility:** Seamlessly supports Nest, Ecobee, Honeywell, Sensi, and all major video doorbells for effortless integration.

## Overview

The WUYELIN 24VAC 40VA Plug-in Transformer is a high-performance, wall-mount power solution designed to reliably energize smart thermostats and video doorbells. Compatible with leading brands like Nest, Ecobee, Honeywell, and Sensi, it features a safe auto-resetting fuse, LED power indicator, and easy screw terminal installation. Its robust 40VA output ensures stable operation, eliminating frequent battery replacements and supporting advanced smart home features seamlessly.

## Description

24VAC 40VA Plug in Transformer,Doorbell Transformer Compatible with All of Doorbell，Nest, Ecobee, Sensi and Honeywell Thermostat - desertcart.com

Review: It Works as expected, easy to install! - It works as expected, and it was very easy to set up — wind the wires around each terminal and screw them tight. Unlike my old "24V" adapter, this one is powerful enough to supply the juice needed to support "Pre-recording" on my Eufy Video Doorbell E340
Review: Works great with my 3 Zone TACO SR503 switching relay and Nest Power Connectors - Working great to power my 3 zone TACO SR503 switching relay setup with 3 nest power connectors. I have a two wire setup (R and W) only and this can provide power to my Nest Thermostats no problem.

## Features

- 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.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B085WPNC29 |
| Best Sellers Rank | #23,755 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #20 in Door Bell Transformers |
| Brand | WUYELIN |
| Brand Name | WUYELIN |
| Current Rating | 1.66 Amps |
| Customer Reviews | 4.4 out of 5 stars 1,165 Reviews |
| Item Dimensions D x W x H | 2.1"D x 2.5"W x 3.8"H |
| Item Height | 3.8 inches |
| Item Weight | 0.7 Kilograms |
| Manufacturer | WUYELIN |
| Maximum Frequency | 60 Hz |
| Minimum Frequency | 60 Hz |
| Model | HU-XI-22 |
| Mounting Type | Wall Mount |
| Power Source | Corded Electric |
| Product Dimensions | 2.1"D x 2.5"W x 3.8"H |
| Specification Met | RoHS |
| UPC | 791309016563 |

## Product Details

- **Brand:** WUYELIN
- **Current Rating:** 1.66 Amps
- **Mounting Type:** Wall Mount
- **Power Source:** Corded Electric
- **Product Dimensions:** 2.1"D x 2.5"W x 3.8"H

## Images

![24VAC 40VA Plug in Transformer,Doorbell Transformer Compatible with All of Doorbell，Nest, Ecobee, Sensi and Honeywell Thermostat - Image 1](https://m.media-amazon.com/images/I/51+xAjpjPsL.jpg)

## Questions & Answers

**Q: what does the OV stand for?**
A: OV stands for output voltage

**Q: Will this support 2 different  ring doorbells?**
A: yes,You need to connect correctly

**Q: Do they normally get a little hot?**
A: The transformer will get a little hot during operation.
If the temperature exceeds the load, there is a recoverable fuse at the output of the transformer, the protection will be activated and the output will be disconnected

**Q: Will this work with the Logitech Circleview Doorbell?**
A: If it takes 24V, then yes. I have it on my Ring which needs 16-24V, works great.

## Customer Reviews

### ⭐⭐⭐⭐⭐ It Works as expected, easy to install!
*by F***O on December 23, 2025*

It works as expected, and it was very easy to set up — wind the wires around each terminal and screw them tight. Unlike my old "24V" adapter, this one is powerful enough to supply the juice needed to support "Pre-recording" on my Eufy Video Doorbell E340

### ⭐⭐⭐⭐⭐ Works great with my 3 Zone TACO SR503 switching relay and Nest Power Connectors
*by G***0 on November 26, 2025*

Working great to power my 3 zone TACO SR503 switching relay setup with 3 nest power connectors. I have a two wire setup (R and W) only and this can provide power to my Nest Thermostats no problem.

### ⭐⭐⭐⭐⭐ Perfect! Worked out great for our new Ring Doorbell
*by C***E on September 28, 2025*

Easy to install, came fast.

## Frequently Bought Together

- 24VAC 40VA Plug in Transformer,Doorbell Transformer Compatible with All of Doorbell，Nest, Ecobee, Sensi and Honeywell Thermostat
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*Product available on Desertcart Thailand*
*Store origin: TH*
*Last updated: 2026-02-28*