Grove - BLE (dual model) v1.0 ----------------------------- ![enter image description here][1] Grove - BLE (dual model) v1.0 uses CSR dual mode Bluetooth chip,with the ARM architecture single chip which supports AT instructions, Users can develop flexibly according to the serial baud rate, equipment name, pairing password. Features: BT Version: Bluetooth Specification V4.0 & BLE UART send and receive max bytes is 512 Other device to module in SPP mode: 90 Bytes per packet Other device to module in BLE mode: 20 Bytes per packet Two data transmission mode, balance mode and high speed mode Working frequency: 2.4GHz ISM band Modulation method: GFSK(Gaussian Frequency Shift Keying) RF Power: -23dbm, -6dbm, 0dbm, 6dbm. Speed: Asynchronous: 3K Bytes Synchronous: 3K Bytes Security: Authentication and encryption Service: Slave SPP, Peripheral BLE, UUID FFE0,FFE1 Power: +3.3/+5.0VDC 50mA Long range: SPP 30 meters, BLE 60 meters Power: SPP 13.5mA, BLE 9.5mA Working temperature:–5 ~ +65 Centigrade From: For more detail, please visit: http://www.seeedstudio.com/item_detail.html?p_id=2407 Wifi From: http://www.seeedstudio.com/wiki/Grove_-_BLE_(dual_model)_v1.0 [1]: http://www.seeedstudio.com/depot/bmz_cache/2/21dcca279e79eee80f22594e0ec4a969.image.530x397.jpg