1-10PCS USB Bluetooth 5.2 Serial Module ECB02C BLE Serial Transmission Module

1-10Piece USB Bluetooth 5.2 Serial Module ECB02C BLE Serial Transmission Module

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ESP32-S3-DevKitC-1 Development Board ESP32-S3 WiFi Bluetooth 5 BLE Module

1-10PCS JDY-68A Dual Mode BLE Audio Module Bluetooth Playback Board Serial Port

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1-10PCS JDY-68A Dual Mode BLE Audio Module Bluetooth Playback Board Serial Port

DC 12V 1 Channel Bluetooth BLE 5.2 Relay Swithc Module Control Board 6 Commands