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HQRP 24V AC Adapter Transformer Compatible with Ecobee Google Nest Honeywell Emerson Ecobee4 Smart WiFi Thermostat, Wyze Ring Blink Video Doorbell C-Wire, 25ft Cable, ETL Listed

Tech Under 30

January 2, 2026

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Price: $15.45
(as of Jan 02, 2026 12:23:54 UTC – Details)

Product description

1. Versatile Power Supply: This 24V AC adapter transformer serves as a reliable power source for various applications. Whether it is powering your doorbell, thermostat, or providing a C wire power adapter solution.

2. Stable Voltage Output: With its 24V AC output, this transformer ensures a stable voltage supply to your devices. Say goodbye to fluctuating power levels and enjoy consistent performance, ensuring your doorbell or thermostat operates smoothly and efficiently.

3. Easy Installation: Designed for hassle-free setup, this transformer simplifies the installation process. Whether you are replacing an existing power supply or setting up a new one, its user-friendly design allows for quick and easy installation, saving you time and effort.

Always-On Power for Smart Homes: The HQRP C Wire Adapter is a 24V AC transformer designed to solve two common problems—missing thermostat C-wire and doorbell battery drain. It provides continuous, stable power so your devices stay online and responsive.Clean, Stable 24V AC Output: 120V AC input converts to 24V AC 300mA for thermostats and video doorbells. Low interference & noise help prevent reboots, flicker, and chime dropouts.Built-In Safety & Quality: ETL listed. Automatic overload cut-off, thermal cut-off, short-circuit and over-voltage protection deliver high efficiency and reliability.Quick Installation: Use the non-polarized leads to connect to thermostat terminals or doorbell screws, then plug into a standard outlet. The 25 ft white cable makes routing along walls simple for a neat finish.Compatible with Thermostats: compatible with Ecobee (ecobee3, ecobee4), Google Nest (Learning Thermostat, Thermostat E), Honeywell (T5, T9), Emerson Sensi.

Compatible with

Compatible with Ecobee Google Nest Honeywell Emerson Ecobee4 Smart WiFi Thermostat, Wyze Ring Blink Video Doorbell C-Wire, 25ft Cable, ETL Listed

Compatible with Video Doorbells: compatible with Ring (2020, 3, 4, Pro, Pro 2), Wyze, Blink, Eufy, Skybell, Arlo wired models.

Specs:

Input: 120V AC

Output: 24V AC, 300mA

Cable length: 25 ft

Color: White

What’s Included: HQRP 24V AC transformer with 25 ft cable.

Notes: Designed for devices that accept 24V AC input. Not a DC charger. Verify your device power requirements before installation.

HQRP® Replacement AC Adapter; ETL Listed; Fix no-C-wire & low-battery issues — delivers constant 24V AC to power smart thermostats and video doorbells for stable, always-on performance;
Input: 120V AC; Output: AC 24V, 300mA; 25ft Cable; Wide compatibility — compatible with Ecobee ecobee3 ecobee4, Google Nest Learning & E, Honeywell T5 T9, Emerson Sensi; Ring 2020 3 4 Pro Pro2, Wyze, Blink, Eufy, Skybell, Arlo (wired);
Safety Features: High Efficiency and Reliability; Automatic Overload cut-off; Stable, quiet output — 120V AC input to 24V AC 300mA with low interference & noise to prevent resets, dropouts, or erratic chimes;
Automatic Thermal cut-off; Short circuit and Over Voltage protection; Low Interference & Noise; 1 Year warranty! Safety you can trust — ETL listed with automatic overload & thermal cut-off plus short-circuit and over-voltage protection;
Compatible With Ecobee Google Nest Honeywell Emerson Ecobee4 Smart WiFi Thermostat, Wyze Ring Blink Video Doorbell C-Wire, 25ft Cable;
C Wire Adapter Compatible with Ecobee Nest Honeywell Emerson Ecobee4 Smart WiFi Thermostat C-Wire, 25ft Cable; Fast install anywhere — 25 ft non-polarized white cable routes from outlet to device; plug-in or hardwire leads to terminals for a clean, reliable setup;