The OKY3378 is a Bluetooth module manufactured by OKYSTAR and is composed of a Bluetooth V4.0 & BLE, UART, and CC2540 chipset. It operates on a voltage range of 2÷3.6VDC and is specifically designed for low-power, short-range wireless communication applications. Its features include the following: support for a variety of topologies, including point-to-point, star, scatternet, and mesh networks; support for high speed connection and data rates of up to 2.1Mbps; support for multiple profiles and protocols, including SPP/GAT/GATT, HCI, L2CAP, and RFCOMM; transmit power up to 10dBm; scan and connection response time reduced to under 5ms; and current consumption of 2.7mA in transmission and 1.3mA in reception.