Image Gallery
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 |  The NB IoT smart lock PCB features a SIM card holder, a Quectel NB IoT module (like a tiny modem) NFC chips, and a MCU processor. |  |  |
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| The NB IoT smart lock PCB features a SIM card holder, a Quectel NB IoT module (like a tiny modem) NFC chips, and a MCU processor. | | |
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