Newhouse Hardware 40TR 24-Volt 40vA Wired Door Bell Transformer for Powering Multiple Smart Doorbells and Thermostats, Silver
$ 21
Price: $20.87
(as of Jun 24, 2025 01:08:58 UTC – Details)
Specifications: input voltage: 120 V AC, 60 hz, output voltage: 24 V AC at 40 VA, dimensions: 2 x 2. 5 x 2. 5 inch universal powering for multiple doorbell chimes, smart video doorbells and thermostatic devices in one home. Replace the old and under powered doorbell transformers for better performance. Compatible with Ring Pro and ring doorbells, Wi-Fi and other smart thermostats like Nest and Eco bee and more. Not compatible with ring chime pro. UL Certified to safety and quality. Safe and easy install I on. WARNING: This product may expose you to chemicals known to the State of California to cause cancer or reproductive harm
24VAC/40VA doorbell transformer for powering single or multiple doorbells and thermostats.
Thermal cut-off switch offers an extra layer of safety, shutting off power in the event of excessive temperature. UL Certified.
Quick and easy installation: simply mount to electrical box via threaded connector or screw down
Eliminate issues caused by underpowered transformers: a lack of power, connection issues, low quality video resolution, and low chime volume may be an indicator of an underpowered transformer
Compatible with Ring Video Doorbell Pro, Nest Hello, Nest thermostats, Zmodo Smart Greet Wi-Fi Doorbell, Sky Bell Doorbell, and more. Brands mentioned for compatibility information only.
Input voltage: 120 Vac, 60Hz | Output voltage: 24 Vac at 40VA
Backed by a 2 year manufacturer
Customers say
Customers find the transformer easy to install and perfect for Ring doorbells, with good value for money. The power output receives mixed feedback – while some say it keeps Ring doorbells charged, others report zero voltage output. The transformer’s durability and functionality also get mixed reviews, with some finding it solid while others describe it as cheaply made, and some units working well while others quit working within a week. The noise level and heat level receive mixed feedback, with some reporting no buzzing while others experience loud humming and overheating.
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