ESP8266 ESP-01 Wi-Fi Module, 2.4GHz

The Espressif ESP8266 ESP-01 Wi-Fi Module is a compact 2.4 GHz wireless module integrating the ESP8266 SoC with TCP/IP networking capabilities. It supports IEEE 802.11 b/g/n standards and operates as a standalone microcontroller or as a Wi-Fi interface for external MCUs via UART. The module features a 32-bit Tensilica L106 processor, integrated antenna, and on-board flash memory for firmware storage. It operates at 3.0–3.6 V and supports AT commands, Arduino IDE, and Espressif SDK. Typical applications include IoT devices, wireless sensors, home automation, and serial-to-Wi-Fi communication.

• ESP8266 SoC: Integrated 32-bit Tensilica L106 processor with TCP/IP stack

• Wireless Standard: IEEE 802.11 b/g/n support at 2.4 GHz

• Interface: UART communication for AT commands and external MCU control

• Operating Voltage: 3.0–3.6 V DC power supply requirement

• Memory: On-board 1MB flash memory for firmware storage

• Antenna: Integrated PCB antenna for compact design

• Firmware Support: Compatible with AT firmware, Arduino IDE, and Espressif SDK

• Manufacturer | Model: Espressif Systems | ESP8266 ESP-01

• Wireless Frequency | Band: 2.4 GHz ISM band

• Wireless Standard | Protocols: IEEE 802.11 b/g/n

• Processor | Architecture: 32-bit Tensilica L106 MCU

• Operating Voltage | Supply Range: 3.0–3.6 V DC

• Current Consumption | Typical: ~70 mA average during Wi-Fi operation

• Interface | Communication: UART (TX/RX)

• Memory | Flash: Integrated SPI flash memory

• Antenna | Type: On-board PCB antenna

• Operating Temperature | Range: −40 to +85 °C

• Form Factor | Mounting: Through-hole module

• Dimensions | Size: Approximately 24.8 × 14.3 mm

• 3D Model
• AT Command Set
• ESP8266 Datasheet
• NURDspace Wiki (Schematic, Datasheet, & More!)

• How to Program ESP-01 Module
• Instructables Tutorial