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Your cart is empty.Product Description
High voltage protection
When high voltage occurs,the surge protection will be hit through to protect the connected device.Over Current protection: when over current occurs, the power supply will automatically switch to self-protection status, when condition removed, then switch back to normal
AC to AC Power Supply / 40 VA Doorbell Transformer
Input 120V AC to 24V AC Output Power Adapter,LED green power indicator
Easy to install: Output with screw terminals, simple wiring，Low interference，Built-in resettable PTC fuse.
Competible with All Versions of Ring Doorbell and Thermostat, Compatible with Nest, Ecobee, Sensi, Honeywell
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 Specifications
Item：UL Listed Power Adapter；Model Number：PS-AC2440U；Input Voltage：AC120V；Output Voltage：AC 24V ；Total Output Current：1.6A；
Application：CCTV Camera, IP Camera, PTZ, IR Illuminator, DVR, LED Driver, Access Control, etc.；
Operating Temperature：-20~40℃；Size/Net Weight：1.5 Lbs；Certification：UL
Customer
2025-09-05 14:18:19
Worked.
mike s
2025-09-01 12:22:10
Works fine. I would have given 5 stars but it is not adaptable to a modern rectangular faced outlet. Still works , but there is no set screw holding it in place. A loose fitting outlet may not hold it without the set screw.
Customer
2025-06-12 12:23:08
We’ve been using it a month and working well.
Exactly what I wanted
2025-05-20 16:10:56
Needed to replace old transformer on house alarm system. This did the job!
SteveV
2025-03-29 11:01:41
I needed to test a video doorbell before committing to actually replacing my existing doorbell and this provided simple way to power it up while I temporally set up the doorbell in my garage. This unit is well built and is rated at 40VA which provides more than enough power for the current crop of video doorbell options. Recommended.
Richard B.
2025-03-23 13:38:12
Does what it is supposed to do. A little tight in the bottom of the cabinet enclosure. Do your measurements.Reasonably-priced.
stevenhallas
2025-02-05 15:14:31
Picked this up because I needed a way to provide continual power to a smart/wifi thermostat. This was super easy to setup and it has worked perfectly. I wasn't able to get it screwed into the outlet where it's plugged in, unfortunately, which I would definitely recommend doing if you can...because this adapter is surprisingly heavy. Aside from that, super happy with this.
Donna Leone
2025-01-01 17:17:18
Poorly packaged, no instructions included
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