.The OKY3372-1 is a Bluetooth module manufactured by OKYSTAR. It is based on Bluetooth v2.0 + EDR technology and is designed to provide a wireless connection to Bluetooth-enabled devices. It is supplied with a 3.3 - 3.6 VDC supply voltage and is equipped with a UART interface for easy communication. The module is designed to be small and low-power, making it suitable for a wide range of applications such as Bluetooth printing, data transfer, and audio streaming.