Now available from PMD Way are these compact and useful CH9141 Bluetooth LE Transparent UART Modules. They can easily be used as a Bluetooth UART data passthrough, so you can access your microcontroller-based projects using the UART via Bluetooth. Specifications: Supports broadcast mode, master mode and slave mode Supports serial port AT configuration and Bluetooth transmission configuration Provides Bluetooth virtual serial port driver on computer Compatible with existing serial port software and tools, without secondary development Supports Bluetooth host connection of Windows/Linux/Android/iOS and other systems Power off sleep current 0.3uA Transmission distance up to 100 meters, in reality when you take enclosures, walls, etc., into consideration the distance will be less. The transmission power is adjustable at 8 levels Supports 3.3V and 2.5V working voltage Maximum communication baud rate of asynchronous serial port: 1Mbps The serial port supports 5/6/7/8 data bits and 1/2 stop bits The serial port supports odd, even, no verification, blank 0, flag 1 and other verification methods Support to obtain chip power supply voltage parameters 32K clock source can select external crystal oscillator Click here for more information about the CH9141 IC Don't forget to check out our full range of Bluetooth breakout boards if this doesn't meet your needs. And as always, all orders receive free delivery. And remember ... if you: can't find what you need not sure what to order want a bulk deal need technical support or just want to have a talk ... Please email us via [email protected]. To keep up to date with new products, news, tutorials and more - we're on x, Facebook, Instagram, threads, reddit, and instructables.