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ESP-WROOM-32D - Wi-Fi/BT/BLE Module with PCB antenna



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The Espressif ESP-WROOM-32D is an industry-leading Wi-Fi, Bluetooth (BT), and Bluetooth Low Energy (BLE) module designed around the ESP32-D0WD chip. This module offers a PCB antenna which increases the RF performance for a wider range of applications.

With the integration of the ESP32-D0WD chip, the device provides two (2) individually controlled and powered CPU cores. The CPU has an adjustable clock frequency (80 MHz to 240 MHz) and can be powered off while a separate low power co-processor continuously monitors the peripherals for changes in status.

Some of the powerful peripherals integrated within the ESP32-D0WD include:

  • High speed SPI
  • UART
  • I²S
  • I²C
  • Ethernet
  • SD card interface
  • Hall sensors
  • Capacitive touch sensors
  • Low-noise sense amplifiers


The WROOM-32D utilizes a freeRTOS operating system with LwIP; TLS 1.2 and built-in hardware acceleration. It is fully-customizable with an open-source platform and secure encrypted over-the-air (OTA) updates, allowing firmware to be updated in deployed products with minimal expense.

GitHub provides a large collection of example code and information for device customizations.

Common applications include:

  • Internet of Things (IoT) solutions
  • Wearable electronics
  • Home automation
  • Music streaming
  • MP3 decoding
  • Sensor networks
  • Voice encoding


Compare ESP-WROOM-32 Series


Order Summary



Flash Memory

Operating Temperature

Manufacturer Part #

GC-ESP-WROOM-32D 4MB -40ºC to 85ºC (-40ºF to 185ºF) ESP32-WROOM-32D
GC-ESP-WROOM-32D-8M 8MB -40ºC to 85ºC (-40ºF to 185ºF) ESP32-WROOM-32D (8 MB)
GC-ESP-WROOM-32D-16M 16MB -40ºC to 85ºC (-40ºF to 185ºF) ESP32-WROOM-32D (16 MB)
GC-ESP-WROOM-32D-HT 4MB -40ºC to 105ºC (-40ºF to 221ºF) ESP32-WROOM-32D (M113DH3200PS3Q0)


Features of the ESP-WROOM-32D

  • Combo Wi-Fi, Bluetooth (BT), and Bluetooth Low Energy (BLE) module
  • Integrates with the ESP32-D0WD chip
  • Two independently controlled CPU cores with adjustable clock frequency from 80MHz to 240MHz
  • Sleep current is less than 5 μA, making it suitable for battery-powered and wearable-electronics applications
  • 4-layer FCC, CE ( RED ), IC, TELEC, SRRC, and KCC-compliant design
  • Classic Bluetooth for legacy connections, supporting:
    - L2CAP
    - SDP
    - GAP
    - SMP
    - AVDTP
    - AVCTP
    - A2DP (SNK)
    - AVRCP
  • Including BLE GATT-based profiles, such as BlueFi, SPP-like, etc.
  • Bluetooth Low Energy (BLE) connects to smart phones, broadcasting low-energy beacons for easy detection
  • Wi-Fi modes: Soft-AP/Station/SoftAP+Station/P2P
  • Fully certified with integrated PCB antenna and software stacks
Antenna Internal On-Board PCB antenna
Certifications FCC1 / CE1 / CE2 / IC / KCC / NCC / SRRC / TELEC
Dimensions 18mm x 25.5mm x 3.1mm
Firmware Upgrade: UART Download / OTA (via network)
Download and write firmware via host
Frequency band 2.4GHz-2.5GHz (2400M-2483.5M)
Integrated circuit (ic) ESP32-DOWD
Interfaces Wi-Fi mode: station/SoftAP/SoftAP+station/P2P
GPIO, Capacitive touch sensor, ADC, DAC, LNA pre-amplier
Memory 4 MB, 8 MB, or 16 MB Flash
448kB ROM
536kB SRAM
Pins 38 Pins
Power Average: 80 mA
Protocols 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
Radio Power Output 20.5 dBm
Sensitivity -98dBm
Security/protection Security: WPA/WPA2/WPA2-Enterprise/WPS
Encryption: AES/RSA/ECC/SHA
  • Hall sensor
  • Temperature sensor
Software Supports Cloud server development
SDK for custom firmware development
Temperature range Operating: -40ºC to 85ºC (-40ºF to 185ºF)
High Temp Option: -40ºC to 105ºC (-40ºF to 221ºF)
Timers On board clock: 26 MHz crystal, 32 kHz crystal
Voltage Operating: 2.7V ~3.6V


ESP-WROOM-32D Datasheet View (PDF)
ESP-WROOM-32 Datasheet View (PDF)
ESP32 Datasheet View (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)
ESP-WROOM-32 AT Bin Download (ZIP)

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