The ESP8685-WROOM-03 is a general-purpose Wi-Fi and low-power Bluetooth (Bluetooth LE) module with powerful features and a rich set of peripheral interfaces for use in smart home, industrial automation, healthcare, consumer electronics, and other applications.

The ESP8685-WROOM-03 features a PCB on-board antenna. The module adopts ESP8685H4 chip. ESP8685 series chips are equipped with RISC-V 32-bit single-core processor and integrate rich peripherals, including UART, I2C, I2S, infrared remote control peripheral, LED PWM controller, general-purpose DMA controller, TWAI controller, USB serial/JTAG controller, temperature sensors and analogue/digital converters.