ESP-07 ESP8266 Serial WiFi Module with External Antenna Connector

The ESP-07 ESP8266 Serial WiFi Module with External Antenna Connector handles the complete 802.11 WiFi stack internally — frequency management, security handshake, and IP stack all run on-chip without loading an external microcontroller. The ESP8266 Chip communicates with a host MCU through UART at 115200 bps default, using standard AT commands that any Arduino, STM32, or PIC with a serial port can send. The IPEX connector accepts an external antenna, making the esp07 esp8266 serial wifi module the right choice when the device sits inside a metal enclosure or behind thick walls where an onboard trace antenna would lose significant signal.

The esp07 esp8266 wifi module, 16-pin castellated pad layout exposes 9 GPIO lines alongside ADC, SPI, UART, EN, and RST — enough for direct sensor interfacing without needing a separate MCU in simple applications. SPI flash at 8Mbit stores the default AT firmware with room for NodeMCU or custom ESP-IDF firmware. Operating voltage is 3.0V to 3.3V DC — the module must not be powered from a 5V source directly. The 3.3V logic level also applies to all GPIO and UART pins, so any 5V microcontroller needs a level shifter on the TX and RX lines before connecting. Skipping the level shifter damages the UART input pins over time even if it appears to work initially.

The esp8266 esp 07 wifi module with external antenna connector platform has extensive community library support across Arduino IDE and MicroPython. The WiFi module suits remote sensor nodes, MQTT clients, and HTTP data logging builds where low-cost wireless connectivity matters. Available on StemVolt. Its building embedded WiFi communication and practical IoT sensor projects.

Related Products:

• Checkout 30 Pin ESP32 Board Wifi + Bluetooth Type-C

Features:

• IPEX antenna port suits sealed enclosure and long-range installations
• Castellated 16-pin SMD body solders directly onto custom PCB designs
• WPA2-PSK security connects to protected home and office networks
• 3.0V to 3.3V input suits lithium cell and regulated 3.3V supply

Technical Specifications:

Applications:

• ESP-07 ESP8266 Serial WiFi Module sends data over WiFi from sealed field
• Connects Arduino serial port to home router using AT commands
• Serial wifi module builds MQTT sensor node for temperature logging to cloud dashboard
• ESP8266 ESP07 Module suits multi-unit deployment across warehouse environmental monitoring systems
• ESP07 ESP8266 pinout GPIO pins read DHT22 sensor data and push readings over wifi

Package Includes:

• 1 x ESP-07 ESP8266 Serial WiFi Module with External Antenna Connector