CC2540 CC2541 HM-10 BLE Bluetooth 4.0 Serial Wireless Module for Arduino
1PCS x 4.0 HM-10 CC2540 CC2541 BLE Bluetooth Serial Wireless Module Arduino. This small size Bluetooth 4.0 TTL transceiver module allows your target device communicate with. your iPhone/iPAD, IOS 6 or Android 4.3 above devices.