Supports Wi-Fi and Bluetooth 5 (LE) Flash: 8MBSupported development platforms: for Arduino, ESP-IDF, VS CodeAdapt to RS232 DB9 female interface, DC input 7V-24VOnboard functions: WS2812, Button: Reset + Boot + 102 Type:Bluetooth,WIFIMCU:ESP32-S3Full-duplex high-speed RS232 moduleModule Name:RSM232MT5VIsolation voltage:3000VPort:TTL/RS232Isolated output:5V/50mA 0.5WCommunication rate:1200-256000bpsThe product appearance and printed words may vary depending on the batch, but this does not affect use.The circuit board printing is slightly different, which does not affect the use.Colour:BlackMaterial:PC Package Contents:1 x RS232 module Only the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.