Welcome to the store! Supports Wi-Fi and Bluetooth 5 (LE) Flash: 8MB Supported Development Platforms: Arduino, ESP-IDF, VS Code Adapts to RS232 DB9 female connector, DC input 7V-24V Built-in Functions: WS2812, Buttons: Reset + Boot + 102 Type: Bluetooth, WIFI MCU: ESP32-S3 Full-duplex high-speed RS232 module Module Name: RSM232MT5V Isolation Voltage: 3000V; Port: TTL/RS232 Isolated Output: 5V/50mA 0.5W Communication Speed: 1200-256000bps Product appearance and printed words may vary depending on the batch, but this does not affect usage. Color: As Shown Material: PCB Package Contents: 1 x RS232 Module Only the above package content is included; other products are not. Note: Light reflection and different displays may cause the color of the item in the picture to differ slightly from the real thing. The allowed measurement error is +/- 1-3 cm. Your satisfaction is our top priority. We will provide you with the best service. If you find any problems after receiving the product, such as damage, incorrect quantity, etc., please contact us immediately, and we will provide you with the best solution!