1PCS Bluetooth 4.0 module BLE CC2541 low power NEW HM-11 M58

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1PCS Bluetooth 4.0 module BLE CC2541 low power NEW HM-11 S

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HM-10 BLE CC2541 CC2540 Bluetooth 4.0 Serial Wireless UART Transceiver Module

HM-11 BLE Bluetooth 4.0 Transceiver CC2541 JDY-10 Low Power for Apple Android