The ESP8266 WiFi Serial Antenna module communicates over the 2.4 GHz ISM (Industrial Scientific and Medical) band and supports IEEE 802.11 b/g/n (the standard Wi-Fi protocols used on most home routers). The mt76813dbi esp8266 antenna talks to your microcontroller through UART (Universal Asynchronous Receiver Transmitter), a simple two-wire serial interface. You send AT commands over UART at 3.3V logic and the module handles all the Wi-Fi connection work on its own.
The mt7681 datasheet confirms the onboard PCB antenna design, meaning the radiating element is printed on the module board itself. No external antenna is needed. One non-obvious detail — the onboard PCB antenna performance drops noticeably if the module is placed inside a metallic enclosure or right next to a large copper pour. Keep it near a plastic window in the enclosure for best range. The honest limitation is the 3.3V operating voltage — connecting it to 5V GPIO pins directly will damage the module, so a level shifter (a small IC that converts between 5V and 3.3V) is required when pairing with Arduino UNO.
The esp8266 wifi antenna module connects easily with Arduino IDE, PlatformIO, and MicroPython on ESP8266-based boards. Learners building IoT dashboards, making automation projects. Connect TX and RX through a level shifter to your controller, power with 3.3V, and test with the AT command over serial monitor. StemVolt offers fast and reliable delivery of across India with trusted service support.
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Checkout the NodeMCU ESP8266 CH340 wifi development board
Features:
- IEEE 802.11 b/g/n WiFi at 2.4GHz with onboard PCB antenna
- UART serial interface bridges any microcontroller serial port to WiFi
- Up to 72 Mbps data rate for fast IoT sensor uploads
- 100-meter open-space range covers room and short outdoor distance builds
- Station AP and Station-plus-AP modes via AT command configuration
Technical specifications:
 Applications:
- ESP8266 WiFi Serial Antenna used for Arduino UART WiFi bridge project
- College project uses mt76813dbi esp8266 antenna for sensor cloud upload
- Serial WiFi bridge uses esp8266 wifi antenna for IoT MQTT publish
- Industrial node uses mt76813dbi wireless antenna for serial data WiFi relay
- Embedded controller uses mt76813dbi wifi antenna for AP mode hotspot build
Package includes:
- 1 x MT76813DBI ESP8266 WiFi Serial Antenna
Aayush Hurkat –
Exactly as described
Preeti Soni –
Fully satisfied purchase
Mukund Chotiya –
This WiFi serial antenna provides reliable wireless connectivity and stable signal performance for engineering projects and embedded WiFi applications.
Payal Kothari –
On time delivery