Need a 220v transformer for the ring. Will this work for a single ring and chime in the circuit?

Hello, It will be appropriate for 220v as well as for the ring.

Will it keep your ring doorbell charged

Yes it will. In case of an outage happened, the Ring doorbell still sent messages to your smart phone.

Can i use this to run a 120v fan with a 24vac thermostat?

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.

Why black wire is common and white wire is 120v? Is it the white wire is not supposed to be common?

Hello, There is a diagram in the picture 6, black wire is common.

Fully operational. Shipping worldwide, on schedule.Duty & taxes paid at delivery

Help Track order

Account Cart

Fully operational. Shipping worldwide, on schedule.Duty & taxes paid at delivery

Help Track order

Account Cart

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

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

Product ID: 670936297

Details

Brand
HQRP
Mounting type
Wall Mount
Number of Items
1
Power source
Corded
Specification met
CSA UL

⚡40VA high power output

🔌120V-240V universal input

🛠️UL & CSA safety certified

Description

⚡ Power your smart life with confidence and ease!

SAFETY FIRST ALWAYS - UL and CSA certified for peace of mind and reliable, efficient performance in your smart home setup.
EFFORTLESS INSTALLATION - Wall-mount ready with screw or clamp options—get your smart devices powered up in minutes.
UNIVERSAL COMPATIBILITY - Seamlessly works with Nest, Ecobee, Honeywell, Sensi thermostats, plus all Ring and Nest Hello doorbells.
UPGRADE YOUR SMART HOME - Replace underpowered transformers and avoid downtime with this high-efficiency, reliable power adapter.
POWER UP MULTIPLE DEVICES - Robust 24V AC output powers several smart thermostats and doorbells simultaneously without a hitch.

The HQRP 120V-240V to 24V 40VA Transformer is a UL and CSA certified power adapter designed to deliver reliable 24V AC power for multiple smart thermostats and doorbells, including Nest, Ecobee, Honeywell, Sensi, and all Ring models. Its universal input voltage and easy installation make it the perfect upgrade for any smart home enthusiast seeking consistent, high-efficiency power.

Specifications

ASIN	B0849RNB6S
Best Sellers Rank	#236,174 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #29 in Door Bell Transformers
Brand Name	HQRP
Customer Reviews	4.4 4.4 out of 5 stars (202)
Manufacturer	HQRP
Maximum Frequency	60 Hz
Minimum Frequency	60 Hz
Model	887774401282011
Mounting Type	Wall Mount
Number of Items	1
Number of Packs	1
Part Number	887774401282011
Power Source	Corded Electric
Specification Met	CSA, UL
UPC	884667525003
Unit Count	1.0 Count

Common Questions

Are the products genuine and authentic?+

Yes, all products are sourced directly from authorized retailers in the US, UK, UAE and India. We maintain strict quality control processes and verify each product before shipping. All items come with applicable manufacturer warranties and are covered by our standard return policy.

How long does delivery take and is it reliable?+

Delivery times vary by destination country, typically ranging from 3-9 business days. Each order is fully trackable through our system. We handle all customs clearance and use reliable courier partners for last-mile delivery. You'll receive regular updates about your order status via email and our app.

What is Desertcart? Is it safe to order from?+

Desertcart is an international e-commerce platform operating since 2014. We securely process thousands of orders globally each day. Every product goes through our quality verification process before delivery, and we provide end-to-end order tracking, 24/7 customer support, and a comprehensive returns policy to ensure a safe shopping experience.

How is product pricing calculated?+

Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Anjali K.

The product quality is outstanding. Exactly what I needed for my work.

1 month ago

Imran F.

Very reliable shop with genuine products. Will definitely buy again!

2 weeks ago

View all Trustpilot reviews

Shop Global, Save with Desertcart

Value for Money

Competitive prices on a vast range of products

Shop Globally

Serving millions of shoppers across more than 100 countries

Enhanced Protection

Trusted payment options loved by worldwide shoppers

Customer Assurance

Trusted payment options loved by worldwide shoppers.

Desertcart App

Shop on the go, anytime, anywhere.

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Zainab N.

Fantastic and great service. Shipping was faster than expected.

1 week ago

Khalid Z.

Great experience from order to delivery. Highly recommended!

1 week ago

View all Trustpilot reviews