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Relay Modules are designed for current amplification and isolation protection of output loads.Applicable to PLC, microprocessor systems and time relays etc,amplifying the control current of outputs,to protect key control systems not being destroyed.
Anthony
2025-08-26 12:50:05
I used this to install a smart thermostat in my travel trailer. I needed to convert 24V AC to 12V DC to get my Nest thermostat working correctly with the furnace and Air conditioner. This worked great, and has lights on it to know what relay is working. Like any relay it does click but its not that loud in comparison to some other relays I've used. My only complain is that I wish it had a better enclosed housing. I'm not sure what this is supposed to be used for but a housing would have made this a perfect product for my needs.
The COM
2025-07-16 11:05:05
Zero problems with these well made relay boards.
Ewen
2025-07-15 11:57:48
These are still working reliably after a year of use.
Mel Beckman
2025-03-26 17:39:49
I ordered this thinking it works with either 12V or 24V, automatically sensing the input voltage. I missed the selector box on the product web page where you have to specify EITHER a 12V or 24V module. There are actually two different products being sold through this same listing. The 24V model was pre-selected, and when I received it, without any accompanying documentation, I didn’t realize that. My application uses 12V, and while the unit would light up the LEDs on 12V input, the relays wouldn’t energize.Eventually I figured out that there were two different products and I ordered the wrong one. Because the product description said both 12V and 24V, I think they could have been more clear. No labels on the product itself say it’s 24V-only. Also, shipping the product with minimal documentation would have clued me in before I wasted several hours in fruitless testing. I deducted one star for poor pre- and post-sale communications.I tested the module with 24VDC and it appears to work correctly. I will keep the 24V model in my inventory, though, because it looks like a high-quality unit and someday I may have an application suited to it. Seller, please either split this Amazon product page into two different product listings, or clarify the description to say 12V ***OR*** 24V.
Ross
2025-01-31 12:42:25
Used this product in a 12vdc 5th wheel trailer when converting the analog thermostat to a smart 24vac Nest thermostat. Used a 120v to 24vac xfmr spliced from the main AC feed as supply. Worked great. Custom wiring diagrams were found online from others completing similar tasks.Would be nice to have a small box or cover for it as i needed to mount this on the wall exposed. Otherwise you can install inside the wall somehow.
Andy V.
2024-12-29 12:34:09
Lo recomiendo amplamente
Wesam
2024-12-22 18:24:59
Perfect design and very useful interface your HVAC unit with Nest thermostat. Also can be used to drive high voltage appliance using low voltage signal. The quality of the product is good and reliable. It is now working since 2 months with no issue. The LED indicators are useful to know the signal status.
Rick James Bish
2024-11-29 15:32:58
This product is almost certainly a must if you want to install a Nest Thermostat in your RV. Small enough to fit in the wall once you remove it from the green bracket. Use with a 24vac transformer connected to the Nest, outputting 24vac to the relay then using your existing 12vdc to output as signal to your AC unit.
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