ESP32-S2-SOLO Wi-Fi Module (4MB Flash, 240MHz, PCB Antenna)

Upgrade IoT projects with the ultra-compact ESP32-S2-SOLO Wi-Fi module, combining high performance (240MHz CPU) and low-power efficiency in a tiny 18×25.5mm footprint. Featuring 4MB flash, USB OTG, and 43 GPIOs, this module is engineered for wearables, smart home devices, and industrial automation—delivering reliable connectivity without compromising space or energy.

High-Speed, Low-Power Processing

Powered by a 240MHz Xtensa LX7 core with dynamic voltage scaling, the module balances performance and efficiency. The ULP coprocessor monitors sensors during sleep mode, extending battery life for wireless applications.

Robust Connectivity & Versatility

Supports Wi-Fi 802.11 b/g/n (150Mbps) and includes USB OTG, SPI, I2C, and touch sensor interfaces. The PCB antenna ensures stable signal transmission while saving space vs. external antennas.

Developer-Ready Design

Pre-loaded with 4MB SPI flash and RoHS/CE/FCC certifications, the module simplifies prototyping. Note: Requires peripheral soldering for full functionality—optimized for engineers and advanced makers.

Note: This module is recommended for developers currently. The peripheral circuit needs to be soldered when using, and few peripheral interfaces may not perform the full functionality of the sample code. There are still bugs that have to be found and fixed.