UltraPoE 24V 40VA Doorbell Transformer Plug-in AC Adapter White with PTC Fuse Protection for Smart Home
Ultrapoe 24V Doorbell Transformer Plug-in AC Adapter Thermostat Power Supply, Ptc Fuse Protection , Compatible W/Ring, Nest, Honeywell
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Ultrapoe 24V Doorbell Transformer Plug-in AC Adapter Thermostat Power Supply, Ptc Fuse Protection , Compatible W/Ring, Nest, Honeywell

|10 ratings

Key item features

  • ‌Upgrade from underpowered transformers with this robust 24V AC, 40VA power supply. It delivers consistent, ample power to ensure your video doorbells, smart thermostats and other devices operate at peak performance without voltage drops
  • This 24V transformer is UL certified for peace of mind and features an auto-resetting PTC fuse. In the event of an overload or short circuit, the fuse protects your connected devices and automatically resets once the issue is resolved
  • Designed for a hassle-free setup, the doorbell transformer features clear positive/negative screw terminals for secure. The process is straightforward, making it a perfect DIY project for homeowners without requiring professional help
  • Engineered for universal use, this power connector is fully compatible with a wide range of 24V AC devices. It reliably powers popular brands including Ring doorbells, and thermostats from Nest, Ecobee, Sensi, and Honeywell, serving as a direct plug-in replacement
  • A bright green LED power indicator provides instant visual confirmation that the unit is energized and functioning correctly. This allows for quick troubleshooting and assures you that your security and comfort systems have a dependable power source

Specs

Input voltage, 120 VoltsOutput voltage, 24 VFeatures, Over Voltage ProtectionBrand, UltraPoENumber of prongs, 2Color, White

About this item

Product details

Upgrade and simplify your smart home power with the UltraPoe 24V 40VA Plug-in Doorbell Transformer. This AC adapter is engineered to deliver stable, reliable energy specifically for power-hungry video doorbells and smart thermostats. The built-in auto-resetting PTC fuse offers superior protection, giving you peace of mind and eliminating the hassle of replacing blown fuses. It's the ultimate plug-and-play solution for a smarter, more secure home
  • ‌Upgrade from underpowered transformers with this robust 24V AC, 40VA power supply. It delivers consistent, ample power to ensure your video doorbells, smart thermostats and other devices operate at peak performance without voltage drops
  • This 24V transformer is UL certified for peace of mind and features an auto-resetting PTC fuse. In the event of an overload or short circuit, the fuse protects your connected devices and automatically resets once the issue is resolved
  • Designed for a hassle-free setup, the doorbell transformer features clear positive/negative screw terminals for secure. The process is straightforward, making it a perfect DIY project for homeowners without requiring professional help
  • Engineered for universal use, this power connector is fully compatible with a wide range of 24V AC devices. It reliably powers popular brands including Ring doorbells, and thermostats from Nest, Ecobee, Sensi, and Honeywell, serving as a direct plug-in replacement
  • A bright green LED power indicator provides instant visual confirmation that the unit is energized and functioning correctly. This allows for quick troubleshooting and assures you that your security and comfort systems have a dependable power source
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Specifications

Input voltage

120 Volts

Output voltage

24 V

Features

Over Voltage Protection

Brand

UltraPoE

Warranty

Warranty information

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Customer ratings & reviews

3.6 out of 5 stars
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10 ratings5 reviews
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  1. 5 stars50% (5)
  2. 4 stars20% (2)
  3. 3 stars0% (0)
  4. 2 stars0% (0)
  5. 1 star30% (3)
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Showing 1-3 of 5 reviews

Jul 22, 2026
Reviewer name: anonymous
Sold byULTRA POEDelivered byWalmart
5 out of 5 stars
5 out of 5 stars review

Verified Purchase

best fit

it was very easy to install and works great and was so affordable

Incentivized Review
Helpful?3F5S9Z8KUFIX18507701011
Apr 9, 2026
Reviewer name: phi
Sold byULTRA POEDelivered byWalmart
5 out of 5 stars
5 out of 5 stars review

Verified Purchase

Nicely works forever and ever.

After use for a year use, this solid heavy AC two wire power, provides steady power source for two of my Ring video door camera. This kind of old fashion power source could last over 20 years, once install then forget it. and it is UL listed, meet all safety standards.

Incentivized Review
Helpful?3F5S9Z8KUFIX18507701011
Mar 8, 2026
Reviewer name: Robert
5 out of 5 stars
5 out of 5 stars review

Verified Purchase

Easy to install, the retention screw holds it in place to prevent accidental disconnect

Incentivized Review
Helpful?3F5S9Z8KUFIX18507701011
Current price is $18.99
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