Using a 433Mhz signal repeater?

I have a 202U v5 and v6, in one instance where I use them, I need the range to be extended (because it’s inside a concrete building). Would a range repeater work for this application? like this one:

If so, can you recommend one to use that would be compatible with the output of the transmitter?


Sorry but there is no known repeater works with our receiver (due to code format issue).

In this case, our 202U might not be suitable for your application (not sure if external antenna helps).

Our 402U receiver typically will have long range for same transmitter.

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