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ESP-WROOM-32 Wi-Fi 802.11 & Bluetooth Module



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The Espressif ESP-WROOM-32 is an extremely powerful Wi-Fi and Bluetooth combination module that utilizes the versatile ESP32 chips. It comes fully-equipped with 2 CPU cores that can be controlled and powered individually, as well as with an adjustable clock frequency (80 MHz to 240 MHz). The CPU can be powered off in order to use the low power co-processor to constantly monitor the peripherals for changes or crossing of thresholds.

Some of the powerful set of peripherals integrated within the ESP32 include:

  • Capacitive touch sensors
  • Hall sensors
  • an SD card interface
  • low noise sense amplifiers
  • Ethernet
  • high speed SDIO/SPI, UART, I2C, and I2S

The ESP-WROOM-32 combines Wi-Fi, Bluetooth, and Bluetooth LE for a variety of diverse applications; whether it be a low power sensor network, or a more demanding task such as voice encoding, MP3 decoding, or music streaming. Using Bluetooth, users can connect to their phone or broadcast low energy beacons for its detection. The use of Wi-Fi enables a large physical range, as well as direct connection to the internet via a Wi-Fi router. Perfect for wearable electronic or battery powered applications, the ESP32 chip uses less than 5µA. In addition, this module can support data rates of up to 150 Mbps and 22 dBM output power at the PA in order to allow for the widest physical range.

The chip is optimized for efficient performance with its electronic integration, connectivity, range, and power consumption. The ESP32 Chips have a built-in TLS 1.2 with hardware acceleration; its operating system is the freeRTOS with LWIP. The SDK is open-source, meaning the user is able to create their own operating systems and platforms.

Developers are able to continually upgrade their products after release with the secure and encrypted, over the air (OTA) upgrade support.


Part #
Antenna / Connector Type
Flash Memory
ESP32 Chipset
Dimensions (mm)
Manufacturer Part # (Espressif)
GC-ESP-WROOM-32 PCB Antenna 4 MB Flash ESP32-D0WDQ6 18 mm x 25.5 mm x 2.8 mm ESP-WROOM-32
GC-ESP-WROOM-32U IPEX / U.FL Connector 4 MB Flash ESP32-D0WD 18 mm x 19.2 mm x 3.2 mm ESP-WROOM-32U
GC-ESP-WROOM-32-8M PCB Antenna 8 MB Flash ESP32-D0WDQ6 18 mm x 25.5 mm x 2.8 mm ESP-WROOM-32-64M
GC-ESP-WROOM-32-16M PCB Antenna 16 MB Flash ESP32-D0WDQ6 18 mm x 25.5 mm x 2.8 mm ESP-WROOM-32-128M



ESP-WROOM-32 Wi-Fi Module Features:

  • Hybrid Wi-FI & Bluetooth
  • High level of integration
  • Ultra-low power management
  • 240 MHz dual core Tensilica LX6 microcontroller with 600DMIPS
  • 4 MB, 8 MB, or 16 MB Flash
  • 2.2V to 3.6V operating voltage
  • On-board PCB antenna or U.FL/IPEX RF Connector

  • Integrated 520 KB SRAM
  • Integrated 802.11b/g/n HT40 Wi-Fi transceiver, base-band, stack and LWIP
  • Integrated dual mode Bluetooth (classic and BLE)

  • Custom firmware development via SDK
  • Download and write firmware via host
  • User configuration via cloud server and Android/iOs App

  • FCC, CE, TELEC and KCC

  • Internal On-board PCB Antenna Option
  • External U.FL/IPEX RF Connector Option
Certifications FCC1 / CE1 / CE2 / IC / KCC / NCC / SRRC / TELEC
Dimensions 18mm x 20mm x 3mm
  • Upgrade: UART Download / OTA (via network)
  • Download and write firmware via host
Frequency band 2.4GHz-2.5GHz (2400M-2483.5M)
  • Wi-Fi mode: station/SoftAP/SoftAP+station/P2P
  • SD Card, UART, SPI, SDIO, I2C, LED PWM, Motor PWM, I2S, IR
  • GPIO, capacitive touch sensor, ADC, DAC, LNA pre-amplier
Memory 4 MB, 8 MB, or 16 MB Flash
Pins 38 pins
Power Average: 80 mA
  • Wi-Fi: 802.11 b/g/n/d/e/i/k/r (802.11n up to 150 Mbps)
  • Wi-Fi: A-MPDU and A-MSDU aggregation and 0.4 guard interval support
  • Bluetooth: Bluetooth v4.2 BR/EDR and BLE specification
  • Network: IPv4, IPv6, SSL, TCP/UDP/HTTP/FTP/MQTT
  • Security: WPA/WPA2/WPA2-Enterprise/WPS
  • Encryption: AES/RSA/ECC/SHA
  • Hall sensor
  • Temperature sensor
  • Supports Cloud Server Development
  • SDK for custom firmware development
Temperature range
  • Operating: -40ºC to 85ºC (-40ºF to 185ºF)
  • Higher temperature range option available; call for information
Timers On board clock: 26 MHz crystal, 32 kHz crystal
Voltage Operating: 2.2 ~3.6V


ESP-WROOM-32 Datasheet Download (PDF)
ESP-WROOM-32U Download (PDF)
ESP-WROOM-32 Reference Design V1.1 - (recommended for developers who design modules themselves) Download (ZIP)
ESP-WROOM-32 Reference Design V1.0 - (recommended for mass-produced modules) Download (ZIP)
ESP32 Datasheet Download (PDF)


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