The LSD4BT-E92ASTD001 with Wireless Modules RoHS manufactured by Lierda is a Bluetooth module that supports Bluetooth 4.2 and Bluetooth 5.0 protocols. It is a Class 2 based solution with a low-power MCU running the Bluetooth stack, and a BLE specification compliant silicon radio. It is suitable for applications needing range and point to multipoint connectivity. It features a very small form factor, low power consumption, and a high level of integration, making it ideal for portable and cost-sensitive applications. It also supports various interface protocols, such as UART, SPI, I2C and PCM, while offering features such as AES-128 encryption, Over-the-Air-Download (OAD) and Over-the-Air-Update.