Built-in antenna Compliant with Bluetooth 4.0 BLE standard Built in RTC clock chip Support intelligent door lock app for opening doors Built in passive switch (relay), Weight: 0.1984160358 Pounds, Manufacturer: Wesafrae
Built-in antenna Compliant with Bluetooth 4.0 BLE standard Built in RTC clock chip Support intelligent door lock app for opening doors Built in passive switch (relay), Weight: 0.1984160358 Pounds, Manufacturer: Wesafrae
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