The OKY3374-1 module manufactured by OKYSTAR is designed for Bluetooth communications. It supports 3.3 VDC input, making it suitable for a variety of mobile and embedded devices. The module is a high performance, single chip Bluetooth V2.1 + EDR, Class 1, Bluetooth 4.0, dual-mode Bluetooth radio. It provides extended range of up to 300m by default and even more when optional external power amplifiers are used. The module also includes support for Bluetooth Low Energy (BLE) mode, making it compatible with new BLE applications. Moreover, the XBee interface on board the OKY3374-1 further enhances its capabilities by enabling radio communications over a wide area.