HM-12: Dual Mode Bluetooth 4.0 BLE SPP LE Serial Port Module For Apple And Android (IM151118002)
Overview
HM-12 is a low consumption bluetooth BLE module. It supports dual mode: SPP and LE, which means it not only support bluetooth 2.1 but also supports BLE. It supports L2CAP, RFCOMM, SPP, GATT, GAT standard Bluetooth protocol.
Features
BT Version: Bluetooth Specification V4.0 EDR and BLE
Send and receive maximum byte count is 90 bytes.
Working frequency: 2.4GHz ISM band
Modulation method: GFSK(Gaussian Frequency Shift Keying)
Speed SPP: 50% serial port rate; BLE: 50% serial port rate