ESP8266EX 2.4GHz UART WiFi Module 20dBm SMD Ceramic Antenna

Meet the ESP8266EX 2.4GHz UART WiFi Module with a compact 16 × 24 mm SMD package and a ceramic (IPX) antenna. This 20 dBm UART-WiFi module delivers reliable 2.4 GHz connectivity (802.11 b/g/n) in a tiny footprint, making it ideal for quick IoT prototyping, smart sensor projects, and embedded devices. With a simple UART interface, it’s easy to wire into microcontrollers and develop WiFi-enabled applications that communicate with the cloud, servers, or local networks. This module operates across a wide temperature range and is built to perform in real-world environments while staying compact and cost-effective.

Benefits & Tips

• Easy UART-driven WiFi – Integrate wireless connectivity quickly with straightforward UART commands for TCP/UDP, HTTP, or custom protocols.
• Compact, versatile footprint – 16 × 24 mm SMD package with IPX/Ceramic antenna fits tight spaces and final enclosures.
• Reliable performance – 20 dBm transmit power and 2.4 GHz support provide solid range in open-air conditions (up to ~100 meters with ideal antenna gain and clear line of sight).

Product Specifications

• RF Parameter
  Working frequency: 2402–2483 MHz • Transmitting power: 20 dBm • WiFi version: 802.11 b/g/n • Test distance: 100 meters
• Hardware Parameter
  Size: 16 × 24 mm • Antenna type: Ceramic antenna / IPEX • 50Ω impedance • Communication interface: UART • Package: SMD
• Electronic Parameter
  Power supply: 3.0–3.6 V • Communication level: 3.0–3.6 V • Transmitting current: 165–180 mA • Sleep current: 0.4–0.6 mA • Operating temperature: -40 to +85°C • Operating humidity: 10–90% • Storage temperature: -40 to +125°C

Package Includes

• 5 x ESP8266EX 2.4GHz UART WiFi modules with 20 dBm output and IPX Ceramic Antenna (E103-W01-IPX)

Warnings & Reminders

• Ensure a stable 3.0–3.6 V power supply and compatible UART logic levels when interfacing with host controllers.
• Operate within the specified temperature and humidity range (-40 to +85°C; 10–90%).
• Properly orient antennas and follow regional RF regulations to stay within allowed transmit power in your area.

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