They come with no documentation and searching the web surprisingly yields very little info on where the little breakout board is separated from the antenna board. If you order this you will of course have a basic understanding of Arduino but linking it to some sort of documentation would save a ton of time or even a small document in the package. They really work and they have a long range and you can't beat the price. I have 6 nanos with N24L01 built in and I connected it to my UNO to talk to my 6 little nanos and I get a great distance with this antenna and my little nano's built in antennas. Good price, good performance. bad documentation.
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