how do i know if I need a transformer ?

Your simple push button doorbell will have a transformer somewhere, usually mounted to the side of an electrical junction box or the circuit breaker (or fuse) box, often in the basement. If you are installing a "Ring" doorbell, the system requires 30VA at 16V. You will need to track down your existing transformer and read the specifications, which are usually printed on it. If your transformer output is 30VA or more at 16V, you do not need to replace it. Older systems will have a transformer with only 10VA at 16V which will need to be replaced because it will not have enough power to run the new doorbell.

Can I return after 30 days? I do not need the transformer.

Call Amazon, they refund me my payment as the replacement was also defective

Can this transformer be installed in an attic?

I don’t see why not, as long as the wiring you need is there. Also, make sure to put it in an electrical box.

Will it work with a digital chime?

If it need 16 Volts I’d say yes

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RAGNAROSDoorbell Transformer, 16V, 30VA Comptible with Ring Pro,Nest Hello

RAGNAROSDoorbell Transformer, 16V, 30VA Comptible with Ring Pro,Nest Hello

Product ID: 584489252

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Details

Brand
RAGNAROS
Power source
AC
Product dimensions
60D x 48W x
Mounting type
Wall Mount
Current rating
1.88 Amps

⚡16V output power

🔋30VA high capacity

🔧Easy 15-min install

Description

🔔 Power your smart entry with confidence — don’t let low voltage hold you back!

CERTIFIED RELIABILITY - UL-certified quality ensures your doorbell transformer passes inspection and lasts for years.
POWER UP YOUR DOORBELL - Delivers a robust 16V, 30VA output to keep your Ring Pro or Nest Hello running flawlessly.
SAY GOODBYE TO BUZZING - Eliminates annoying hums caused by underpowered transformers for a seamless chime experience.
PLUG PLAY INSTALLATION - Quick, safe setup in under 15 minutes—no electrician needed, perfect for busy pros.
MULTIPLE CHIMES NO PROBLEM - Supports powering single or multiple door chimes simultaneously without voltage drop.

The RAGNAROS Doorbell Transformer provides a reliable 16V, 30VA power supply compatible with Ring Pro, Nest Hello, and similar smart doorbells. Designed to eliminate low voltage issues like buzzing and underperformance, it supports multiple chimes and installs easily in under 15 minutes. UL-certified and built with durable copper components, it’s the essential upgrade for modern smart home entry systems.

Specifications

Specification met	UL
Item weight	0.73 Kilograms
UPC	657631522205
Manufacturer	xiuyi tech, LTD
Item Weight	730 g
Product Dimensions	6 x 4.8 x 6.7 cm; 730 g
Item model number	657631522205
Style	30 va transformer
Material	Copper
Shape	Square
Installation Method	cable
Item Package Quantity	1
Tool Tip Description	doorbell transformer 16-24 vac,transformers
Switch Style	One-way
Special Features	Adjustable
Specific uses	Hard Material
Batteries Included?	No
Batteries Required?	No

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HK$446

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