low energy Bluetooth module 4.0 cc2541

Bluetooth 4.0 module achieved transferring data via far-end Bluetooth and UART port. When it powers on, it will enter communication mode or setting mode based on power level of ModeSW.
Communication mode: the module works as slave Bluetooth, the master Bluetooth on far-end device can find and connect with the module, and then transfer data. 

Specifications

Standard: Bluetooth standard 4.0 low power consuming Bluetooth mode (BLE)

Working frequency: ISM band: 2.402~2.480MHz

Antenna: Built-in micro strip antenna

Distance: 10 meter

Protocol: LL, SMP, L2CAP, ATT, GAP, GATT

Communication port: UART Standard

Power saving: Automatic power saving mode, support low power consuming