Not recommended for new designs - prefer a newer module for future projects.
ESP32-S2-SOLO
ESP32-S2-SOLO is a powerful, generic Wi-Fi MCU module with a rich set of peripherals and pin-to-pin compatibility with ESP32-WROOM modules.
18 × 25.5 mm
4MB
Flash
2MB
PSRAM
40
GPIO pins
18×25.5mm
Size
Specifications
Datasheet ↗Module
FamilySOLO
Embedded chipESP32-S2, ESP32-S2R2
GPIO pins40
AntennaPCB antenna
Dev boardESP32-S2-DevKitC-1
Dimensions18 × 25.5 × 3.1 mm
Memory
Flash4 MB
PSRAMUp to 2 MB
Connectivity
Wi-Fi802.11 b/g/n 2.4 GHz
Module variants
3 variantsBase lowest-cost config Top highest spec High-temp extended temperature range
| Variant | Flash | PSRAM | Tags |
|---|---|---|---|
| ESP32-S2-SOLO-N4 | 4 MB | - | Base |
| ESP32-S2-SOLO-H4 | 4 MB | - | High-temp |
| ESP32-S2-SOLO-N4R2 | 4 MB | 2 MB | Top |
About the ESP32-S2-SOLO
ESP32-S2-SOLO is a compact Wi-Fi MCU module with a rich set of peripherals and pin-to-pin compatibility with ESP32-WROOM modules.
- Small size: 18 x 25.5 x 3.1 mm
- Wi-Fi (2.4 GHz)
- Rich set of peripherals
- Pin-to-pin compatible with ESP32-WROOM modules
- Wide operating temperature range: -40°C ~ 85°C
- Integrated PCB antenna
- Perfect for smart home, industrial, and consumer IoT
The ESP32-S2-SOLO module comes in three main variants:
- ESP32-S2-SOLO-N4 : This is the basic variant with 4MB of flash memory and no PSRAM, suitable for most applications.
- ESP32-S2-SOLO-H4: This is the high-temperature variant with 4MB of flash memory and no PSRAM, designed for harsh environments.
- ESP32-S2-SOLO-N4R2: This is the top variant with 4MB of flash memory and 2MB of PSRAM, ideal for high-performance applications.
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