The TS-M1021 is a diminutive Bluetooth module, measuring merely 8 by 12 millimeters, designed for applications requiring minimal size and low power consumption, without compromising on cost-effectiveness. This module is renowned for its remarkable stability and wide-ranging compatibility. It comes with a default setting that facilitates Bluetooth serial port transparent transmission, allowing users to modify serial port baud rates, device names, and additional parameters using the supplied AT commands. This feature enables adaptable operation and straightforward implementation, making the module an ideal choice for a diverse array of customer development projects.