Shown here is the part number breakdown. The main variables are the antenna and memory. SPWF1SA has an integrated antenna, the C has a U.FL connector. The .11 has an additional 1 MB of flash onboard, the .21 has 512 KB.
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Shown here is the part number breakdown. The main variables are the antenna and memory. SPWF1SA has an integrated antenna, the C has a U.FL connector. The .11 has an additional 1 MB of flash onboard, the .21 has 512 KB.
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