ESP32-S3-WROOM-1 2.4 GHz Wi-Fi & BLE 5 Wireless Module
ESP32-S3-WROOM-1 2.4 GHz Wi-Fi & BLE 5 Wireless Module
ESP32-S3-WROOM-1 Wireless Module – 2.4 GHz Wi-Fi & BLE 5
The ESP32-S3-WROOM-1 is a powerful, versatile wireless module built around Espressif's ESP32-S3 chip. Combining dual-band 2.4 GHz Wi-Fi (802.11 b/g/n) and Bluetooth Low Energy (BLE) 5.0, it is the ideal solution for IoT projects, smart home devices, industrial automation, wearables, and embedded systems development. Whether you're prototyping or building a production-ready device, this module delivers robust wireless connectivity in a compact form factor.
Key Features
- Chip: ESP32-S3 / ESP32-S3R8 – Xtensa® dual-core 32-bit LX7 microprocessor
- Wireless: 2.4 GHz Wi-Fi (802.11 b/g/n) + Bluetooth Low Energy (BLE) 5.0
- Variants: ESP32-S3-WROOM-1 (PCB antenna) & ESP32-S3-WROOM-1U (external antenna connector)
- Flash: N4 variant includes 4 MB flash memory onboard
- GPIO: Rich set of peripheral interfaces – SPI, I2C, I2S, UART, ADC, DAC, PWM, and more
- Low Voltage Operation: Below 50 V AC or 75 V DC (EU LVD compliant)
- No high-concern chemicals: RoHS-compliant design
- General purpose use – suitable for a wide range of embedded and IoT applications
- Customizable: Supports firmware customization and OTA updates
What's in the Box
- 1× ESP32-S3-WROOM-1 Wireless Module
Ideal Applications
- Smart home automation & IoT gateways
- Wearable electronics and edge AI projects
- Industrial sensor nodes and data loggers
- DIY electronics and maker/hobbyist prototyping
- Robotics and embedded control systems
Specifications
| Chip | ESP32-S3 / ESP32-S3R8 |
| Frequency | 2.4 GHz |
| Wireless Standards | Wi-Fi 802.11 b/g/n, BLE 5.0 |
| Antenna | PCB (WROOM-1) / IPEX/U.FL (WROOM-1U) |
| Flash Memory | 4 MB (N4 variant) |
| Operating Voltage | 3.0 V – 3.6 V |
| EU LVD | Below 50 V AC or 75 V DC |
| Country of Origin | Made in Mainland China |
Looking for more tools and electronic accessories for your projects? Check out our Electromagnetic Induction Tester – Coil & Circuit Fault Detector or the Air Compressor Pressure Gauge – DIY Tool to complement your workbench setup.
Learn more: ENERGY STAR product efficiency guidance
Frequently Asked Questions
Q: What is the difference between ESP32-S3-WROOM-1 and ESP32-S3-WROOM-1U?
A: The ESP32-S3-WROOM-1 features an onboard PCB antenna, making it compact and ideal for most standard IoT applications. The ESP32-S3-WROOM-1U has an IPEX/U.FL connector for an external antenna, which is recommended when the module is housed inside an enclosure or when a longer wireless range is needed.
Q: Is the ESP32-S3-WROOM-1-N4 compatible with Arduino and MicroPython?
A: Yes! The ESP32-S3 chip supports development with the Arduino IDE (via the ESP32 board package), MicroPython, ESP-IDF (Espressif's native framework), and PlatformIO. It's widely supported by the maker and professional embedded development communities.
Q: What does the "N4" in ESP32-S3-WROOM-1-N4 mean?
A: The "N4" designation indicates that the module is equipped with 4 MB of onboard SPI flash memory. Other variants exist with different flash sizes (e.g. N8, N16), so be sure to select the correct variant for your firmware storage requirements.
Q: Is this module suitable for beginners in electronics and IoT projects?
A: Absolutely. The ESP32-S3-WROOM-1 is one of the most beginner-friendly yet powerful wireless modules available. With extensive community documentation, tutorials, and library support, it's a great starting point for anyone learning embedded systems, IoT, or wireless communication development.