How to increase the range of a SONOFF 4CH by replacing the original with an external wifi antenna
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External antenna for sonoff 4ch pro R2 - #18 by Patrick123 - Hardware - Home Assistant Community
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External antenna for sonoff 4ch pro R2 - Hardware - Home Assistant Community
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External antenna for sonoff 4ch pro R2 - #16 by 123 - Hardware - Home Assistant Community
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