HM-10 BLE Bluetooth 4.0 CC2540 CC2541 Serial Wireless Module Arduino Androi. _$6
3,12 €
This small size Bluetooth 4.0 TTL transceiver module allows your target device communicate with. Power input: 3.6V-6V DC(Can not higher than 6V). Size: 43mm x 15mm. You can use AT command set the baudrate.
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