As a Grove product it's convenient to use Grove - BLE with Arduino board via Base Shield.
With support for a BLE ComAssistant APK, this Grove - BLE can talk to your mobile phone easily without pairing, and of course, it can be set via AT commands directly. You can use it in many conditions, like robot controls or remote control equipment ,etc. It has an easy and convenient command set, so you can use neat and concise code to run the function.
||Bluetooth Specification V4.0 BLE
||2.4GHz ISM band
||GFSK(Gaussian Frequency Shift Keying)
||-23dbm, -6dbm, 0dbm, 6dbm, can modify through AT Command AT+POWE
||Asynchronous: 6K Bytes, Synchronous: 6K Bytes
||≤-84dBm at 0.1% BER
||Authentication and encryption
||Central & Peripheral UUID FFE0,FFE1
||3.3v - 5v
||–5 ~ +65 Centigrade
||20cm x 10cm
||< 10 mA
||< 20 mA
||< 1 mA