What Can We Do with NFC Tag? - SONOFF Official

Near-field communication (NFC) is a short-range wireless connectivity technology that uses magnetic field induction to enable communication between devices when they're touched together or brought within a few centimeters of each other. This technology can be embedded in a small tag to facilitate data transfer between nearby mobile phones, laptops, tablets, and other electronics.

Automate Sonoff devices with NFC

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SONOFF NFC Tag Ntag215 Sticker 13.56MHz Universal Label 18mm

Automate Sonoff devices with NFC

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Automate Sonoff devices with NFC

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SONOFF NFC Tag - SONOFF Official

Definitely recommend if you want to step up your home automation