---
product_id: 670936297
title: "HQRP 120V-240V to 24V 40VA Transformer Compatible with Nest, Ecobee, Sensi, Honeywell Thermostat, Nest Doorbell and All Versions of Ring Doorbell Power Supply Adapter Door-Bell 120v-240v-to-24v, UL"
brand: "hqrp"
price: "€ 108.97"
currency: EUR
in_stock: true
reviews_count: 5
category: "Hqrp"
url: https://www.desertcart.hr/products/670936297-hqrp-120v-240v-to-24v-40va-transformer-compatible-with-nest
store_origin: HR
region: Croatia
---

# 40VA power output 120V-240V universal input Easy screw or clamp installation HQRP 120V-240V to 24V 40VA Transformer Compatible with Nest, Ecobee, Sensi, Honeywell Thermostat, Nest Doorbell and All Versions of Ring Doorbell Power Supply Adapter Door-Bell 120v-240v-to-24v, UL

**Brand:** hqrp
**Price:** € 108.97
**Availability:** ✅ In Stock

## Summary

> ⚡ Power your smart home like a pro — never miss a ring or temp drop!

## Quick Answers

- **What is this?** HQRP 120V-240V to 24V 40VA Transformer Compatible with Nest, Ecobee, Sensi, Honeywell Thermostat, Nest Doorbell and All Versions of Ring Doorbell Power Supply Adapter Door-Bell 120v-240v-to-24v, UL by hqrp
- **How much does it cost?** € 108.97 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.hr](https://www.desertcart.hr/products/670936297-hqrp-120v-240v-to-24v-40va-transformer-compatible-with-nest)

## Best For

- hqrp enthusiasts

## Why This Product

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

## Key Features

- • **Backed by Warranty:** 1-year coverage to keep your smart home powered without worries
- • **Universal Compatibility:** Seamlessly works with Nest, Ecobee, Honeywell, Sensi, Ring & more
- • **Plug & Play Installation:** Simple wiring with screw-down or threaded clamp mounting for quick setup
- • **Power Up Multiple Devices:** Robust 24V AC output powers several thermostats & doorbells simultaneously
- • **Certified Safety & Reliability:** UL-listed transformer ensures high efficiency and peace of mind

## Overview

The HQRP 120V-240V to 24V 40VA Transformer is a UL-listed, high-efficiency power adapter designed to replace underpowered transformers. Compatible with leading smart thermostats and doorbells including Nest, Ecobee, Honeywell, Sensi, and Ring, it delivers reliable 24V AC power to multiple devices simultaneously. Easy to install with versatile mounting options and backed by a 1-year warranty, it’s the essential upgrade for seamless smart home performance.

## Description

Compatible With 120V-240V to 24V 40VA Transformer Compatible With Nest, Compatible With Ecobee, Compatible With Sensi, Compatible With Honeywell Thermostat, Compatible With Nest Hello Doorbell and All Versions of Ring Doorbell Power Supply Adapter Door-Bell 120v-240v-to-24v ReplacementDisclaimer:This is not an Original Equipment Manufacturer (OEM) product, HQRP branded product is a replacement. All brand names and logos are registered trademarks of their respective owners. Any use of the brand names or model designations for this product are made solely for purposes of demonstrating compatibility.

Review: Bonita presentación y muy prácticos y de mucha utilidad
Review: Transformer worked

## Features

- HQRP® Replacement Transformer; POWER UP MULTIPLE THERMOSTATS / DOORBELLS: replaces and upgrades underpowered transformer with this 24V AC transformer, offering plenty of power for single or multiple thermostats and doorbells at the same time;
- Input: 120V-240V AC; Output: 24V AC; 40VA; UNIVERSAL COMPATIBILITY: this 24v transformer fits for Nest, Ecobee, Honeywell and Sensi smart thermostats; Also compatible with Ring Video Doorbell, Ring Video Doorbell 2, Ring Video Doorbell Pro, Nest Skybell Doorbell, and other devices that require constant 24 volt power for operation;
- C(UR)US Listed; Safety Features: High Efficiency and Reliability;
- 1 Year warranty! EASY TO INSTALL: screw down or threaded clamp to electrical box, simple to wire up; Compatible With: 24V 40VA Transformer compatible with Nest, Ecobee, Sensi, Honeywell Thermostat, Nest Hello Doorbell and All Versions of Ring Doorbell Power Supply Adapter Door-Bell 120v-240v-to-24v Replacement;

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0849RNB6S |
| ASIN  | B0849RNB6S |
| Batteries Included? | No |
| Batteries Required? | No |
| Best Sellers Rank | #187,945 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 (189) |
| Customer reviews | 4.4 4.4 out of 5 stars (189) |
| Date First Available | 29 June 2020 |
| Date First Available  | 29 June 2020 |
| Item Package Quantity | 1 |
| Item Weight | 712 g |
| Item model number | 887774401282011 |
| Item model number  | 887774401282011 |
| Manufacturer | HQRP |
| Manufacturer  | HQRP |
| Package Dimensions | 10.49 x 6.91 x 6.81 cm; 712 g |
| Package Dimensions  | 10.49 x 6.91 x 6.81 cm; 712 g |
| Part number | 887774401282011 |
| Pattern | PRI:120V/240V SEC:24V 40VA |
| Special Features | Compatible With: 120V-240V to 24V 40VA Transformer Nest, Ecobee, Sensi, Honeywell Thermostat, Nest Hello Doorbell and All Versions of Ring Doorbell Power Supply Adapter Door-Bell 120v-240v-to-24v Replacement |
| Style | PRI:120V/240V SEC:24V 40VA |
| UPC | 884667525003 |

## Product Details

- **Brand:** HQRP
- **Item weight:** 0.71 Kilograms
- **Mounting type:** Wall Mount
- **Power source:** Corded Electric
- **Specification met:** CSA, UL

## Images

![HQRP 120V-240V to 24V 40VA Transformer Compatible with Nest, Ecobee, Sensi, Honeywell Thermostat, Nest Doorbell and All Versions of Ring Doorbell Power Supply Adapter Door-Bell 120v-240v-to-24v, UL - Image 1](https://m.media-amazon.com/images/I/81ti7lf3OmL.jpg)

## Questions & Answers

**Q: Need a 220v transformer for the ring. Will this work for a single ring and chime in the circuit?**
A: Hello,
It will be appropriate for 220v as well as for the ring.

**Q: Will it keep your ring doorbell charged**
A: Yes it will.  In case of an outage happened, the Ring doorbell still sent messages to your smart phone.

**Q: Can i use this to run a 120v fan with a 24vac thermostat?**
A: You could run 120v from the source (wall, etc) to the fan power and the transformer input, and the 24v transformer output to the thermostat.

**Q: Why black wire is common and white wire is 120v? Is it the white wire is not supposed to be common?**
A: Hello,
There is a diagram in the picture 6, black wire is common.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Review
*by G***S on 15 April 2023*

Bonita presentación y muy prácticos y de mucha utilidad

### ⭐⭐⭐⭐⭐ Review
*by L***B on 1 November 2025*

Transformer worked

### ⭐⭐⭐⭐ Review
*by A***H on 6 February 2026*

Good

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**Shop now:** [https://www.desertcart.hr/products/670936297-hqrp-120v-240v-to-24v-40va-transformer-compatible-with-nest](https://www.desertcart.hr/products/670936297-hqrp-120v-240v-to-24v-40va-transformer-compatible-with-nest)

---

*Product available on Desertcart Croatia*
*Store origin: HR*
*Last updated: 2026-03-22*