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24VAC 40VA Plug in Transformer,Doorbell Transformer Compatible with All of Doorbell,Nest, Ecobee, Sensi and Honeywell Thermostat

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$18.99

$ 7 .99 $7.99

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About this item

  • Doorbell/Thermostat power solution: 24Vac 40VA wall transformer, using this Transformer to replace and upgrade the insufficient power transformer, can provide sufficient power for your thermostat and doorbell, save the trouble of frequent battery replacement
  • Specification: input voltage: 120 VAC, 60Hz; Output voltage: 24V, 40VA ,No-load output voltage: 26.6V,SAFE AND STABLE auto-resetting (PTC) fused secondary, LED green power indicator
  • Compatible With: This transformer compatible for Honeywell, for Nest, for Ecobee, and Sensi smart thermostats; Also compatible with Video Doorbell, Video Doorbell 2, Video Doorbell Pro, for Nest Skybell Doorbell。Note: The brand above is only for demonstrating compatibilityyy
  • Easy to install:Output with screw terminals, You can freely cut the connecting cable and arrange the cable according to the length you need to make the installation simple and beautiful
  • Multimeter test products: When using a multimeter to test products, pay attention to using an AC voltmeter or multimeter to test the output voltage value, and use a voltage tester to measure accurate voltage output data. The no-load voltage output measured by the multimeter is about 26.6-28V, which is normal and does not affect any use.



Product Description

24VAC 40VA Plug in Transformer,Doorbell Transformer

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Customer
Reviewed in the United States on March 4, 2025
It was what I needed , works fine.
stallion
Reviewed in the United States on February 23, 2025
I use it to test 24v AC relays had 5. Hook the relays up and if I heard a click I knew it was a good one.
Alexey Labzin
Reviewed in the United States on January 29, 2025
It’s pretty good product.A bit heavy, but looks and works well.
Walter
Reviewed in the United States on June 16, 2024
Excellent product to recharge a doorbell camera.. easy to install.. it's compatible with any doorbell cameras.. constantly keeps battery charged..
Scuba Peugh
Reviewed in the United States on November 18, 2024
Allowed me to install my Ecobee 3 where previously I had an older POE powered thermostat and no C wire from my heating system.
Craig
Reviewed in the United States on October 30, 2024
I bought this for use as a C wire power supply for a thermostat.It doesn't work as it only is putting out 12 volts, not the 24 as it states.I waited too long to install it, so my bad there.
Kemyst
Reviewed in the United States on October 18, 2023
My last AC transformer was way under voltage, this one fixed my doorbell. Running this over 50ft of 18 gauge (new) & 75ft of cat-3 cable (old) joined together to power a Ubiquiti G4 Doorbell pro. Works great :-)This transformer is sold as 24VAC but actually outputs 29VAC when measured by multimeter.The doorbell is working great since installing, but took one star off for being over 10% out of spec. Buyer beware, this could destroy poorly built electronics that can’t handle a little more than 24V
Texas Bigfoot
Reviewed in the United States on November 23, 2020
I bought this because the transformer for our current doorbell, hung "conveniently" waaaay up in the attic, was only about 12 volts (according to my multimeter). The Arlo Video Doorbell will NOT work with a 12 volt transformer, it requires a 24 volt transformer.1) I bought 18/2 wire at Home Depot for the installation2) the transformer comes with a bolt in it. That didn't work for me as the outlet I needed to use is a GFCI outlet which doesn't have a middle bolt hole, so I had to use a small (6 inch) extension cord from the GFCI outlet to the transformer. The bolt on this transformer is NOT easily removeable as the housing of the transformer blocks the bolt's removal. If your outlet doesn't have have a spot for the bolt, you will need a workaround like I used.3) the Arlo Video Doorbell has specific instructions for using a plug-in transformer instead of the transformer found in my attic. You MUST, and I quote, "select None as the Traditional Chime option to avoid any damage to your plug-in AC power adapter".4) this plug-in transformer will not require the Power Kit that comes with the Arlo Video Doorbell unless you use a chime along with the Video Doorbell.
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