ESP32 Development Board CP2102 Chip NodeMCU-32S Lua 38Pin Module Low Power Consumption Bluetooth-compatible GPIO Expansion Board. This expansion board integrates an antenna switch, RF balun, power amplifier, LNA, filters, and power management module, all on a compact PCB, providing a comprehensive solution. It incorporates a 2.4GHz Wi-Fi and Bluetooth-compatible dual-mode chip that uses TSMC's low-power 40nm technology, delivering optimal performance and reliable RF operation.