SKU: IOWC-0687
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Espressif ESP32-S3-WROOM-1U-N4R8 Wi-Fi & BLE 5.0 Module

₹399.00 (Inclusive of all taxes)
Out of Stock

The Espressif ESP32-S3-WROOM-1U-N4R8 is a compact wireless module integrating 2.4 GHz Wi-Fi 4 (802.11 b/g/n) and Bluetooth 5.0 BLE connectivity, powered by the ESP32-S3 SoC. It operates from a 3.0V to 3.6V supply and is designed for AIoT applications, wearables, and advanced IoT devices requiring robust wireless communication and peripheral interfaces.

Features

  • ESP32-S3 SoC with 2.4 GHz Wi-Fi 4 (802.11 b/g/n) and Bluetooth 5.0 BLE for dual-mode connectivity.
  • High RF output power of 20.5 dBm ensures reliable wireless range and signal penetration.
  • Comprehensive peripheral support including I2C, I2S, SPI, PWM, UART, and USB for flexible system integration.
  • Low-power operation with a 3.0V to 3.6V supply range, suitable for battery-powered IoT devices.
  • Compact 25.5 mm x 18 mm x 3.1 mm form factor with an integrated PCB antenna for space-constrained designs.

Out of stock

Description

The Espressif ESP32-S3-WROOM-1U-N4R8 module is a high-performance wireless communication core built around the ESP32-S3 microcontroller. It delivers robust 2.4 GHz Wi-Fi and Bluetooth Low Energy 5.0 connectivity, making it a foundational component for smart home devices, industrial IoT sensors, and portable wearables.

Engineered for efficiency, the module operates within a 3.0V to 3.6V range and leverages the ESP32-S3’s AI acceleration capabilities for edge computing tasks. Its integrated PCB antenna simplifies RF design, while the extensive GPIO and serial interfaces (I2C, SPI, UART, USB) provide direct connectivity to sensors, displays, and actuators. The module’s -40°C to +65°C operating temperature ensures reliability in diverse environmental conditions.

Key Features

  • Dual wireless connectivity with 2.4 GHz Wi-Fi 4 (802.11 b/g/n) and Bluetooth 5.0 LE/BR/EDR.
  • Integrated ESP32-S3 SoC featuring AI acceleration for on-device machine learning inference.
  • High-performance RF front-end with up to 20.5 dBm transmit power for extended range.
  • Rich set of peripheral interfaces including I2C, I2S, SPI, PWM, UART, and USB OTG.
  • Ultra-low-power co-processor (ULP) and multiple sleep modes for energy-efficient operation.
  • Compact, surface-mount module form factor with an onboard PCB antenna, reducing BOM and design complexity.
  • Designed for industrial temperature range operation (-40°C to +65°C) for reliable deployment.
  • RoHS compliant and supports development with Espressif's ESP-IDF, Arduino core, and MicroPython.

Applications

  • AIoT and smart home automation devices (voice assistants, smart switches, sensors).
  • Wearable technology and portable health monitoring gadgets.
  • Industrial IoT (IIoT) telemetry and wireless sensor nodes.
  • Edge computing devices requiring local AI/ML inference.
  • Connected consumer electronics and interactive toys.

Technical Specifications

Microcontroller/SoCEspressif ESP32-S3 (Dual-core LX7, 240 MHz)
Wireless ProtocolsWi-Fi 4 (802.11 b/g/n), Bluetooth 5.0 (LE/BR/EDR)
Frequency Range2.4 GHz
RF Transmit PowerUp to 20.5 dBm
Supply Voltage3.0V to 3.6V
Operating CurrentData not provided
InterfacesI2C, I2S, SPI, PWM, UART, USB OTG
Antenna ConnectorIntegrated PCB Antenna
Operating Temperature-40°C to +65°C
Dimensions25.5 mm x 18 mm x 3.1 mm

Frequently Asked Questions

What development frameworks are supported for programming the ESP32-S3-WROOM-1U-N4R8 module?

The module is fully supported by Espressif's official ESP-IDF (IoT Development Framework), which provides comprehensive libraries and tools for Wi-Fi, Bluetooth, and peripheral control. It is also compatible with the Arduino Core for ESP32 via the board manager and can run MicroPython for rapid prototyping. Developers typically connect via USB-to-Serial for initial flashing and debugging using the integrated USB-OTG capabilities or a UART interface.

How do I connect an external antenna to this module, and what is the impedance requirement?

The ESP32-S3-WROOM-1U-N4R8 variant features an integrated PCB antenna and does not have an external antenna connector (like an IPEX or SMA). For designs requiring an external antenna, you must select the 'U' variant with an external connector or design a matching network to tap into the RF pin. The RF output is designed for a 50-ohm impedance match, and any external antenna or cable must meet this specification to prevent signal reflection and loss.

What are the power supply requirements and typical sleep currents for battery operation?

The module requires a stable supply voltage between 3.0V and 3.6V, with 3.3V being the typical operating point. For battery-powered applications, the ESP32-S3 supports several deep sleep modes. While exact figures depend on configuration, the deep sleep current can be as low as tens of microamps, with the ULP co-processor remaining active for sensor polling. Always use a clean LDO regulator and consider peak current demands during Wi-Fi transmission events when designing your power supply circuit.

Package Includes

  • 1 x Espressif ESP32-S3-WROOM-1U-N4R8 Module

Additional Information

Weight 0.03 kg
Dimensions 5 × 5 × 1 cm