# Wifi module ESP8266 Transceiver, ESP-01

> ESP8266 WiFi module ESP-01, serial 802.11 b/g/n transceiver, works standalone (2 GPIO) or as a WiFi extension for Arduino via RX/TX. AP, STA, AP+STA modes (set via AT commands), integrated TCP/IP stack, 3.3V supply, 1MB flash. Baud rate 115200bps, current draw ~70mA (max ~300mA, standby

- Page: https://sigmanortec.ro/en/wifi-module-esp8266-transceiver-esp-01
- Price: 21.05 RON
- Availability: In stock; 1-2 zile
- Reference: 33081 · EAN: 5942000026312
- Category: Mechatronics and IoT > Sensors and Modules > WiFi Modules
- Package (shipping data): 0.002 kg
- Updated: 2026-09-23
- Shop: [Sigmanortec.ro](https://sigmanortec.ro/en/llms.txt)
- Prices: RON, VAT included; prices and stock as of 2026-10-22 02:21 (Europe/Bucharest)

## Description

Compact WiFi module to quickly add 802.11 bgn connectivity to microcontroller projects, works standalone with 2 GPIO or as an extension for Arduino via the RX TX serial interface. Offers AP, STA or AP+STA modes, includes integrated TCP IP stack, runs at 3.3V and has 1MB flash memory for IoT applications.
WiFI ESP01, ESP8266 module, serial, transmission reception. The module allows microcontrollers to access the Wi-Fi network. It can operate independently having 2 GPIO pins available or can be used together with another microcontroller such as Arduino to add Wi-Fi network capabilities, communication between the two boards being carried out through the RX and TX serial interface.
The module can connect to a WiFi router or can be used as a Host to which both phones and other WiFi modules can connect.
Specifications:
Serial/UART baud rate: 115200 bps
Integrated TCP/IP protocol stack
Supply voltage: 3.3V
I/O tolerance: 3.6V Max
Regular current consumption: ~70mA
Maximum current consumption: ~300mA
Standby Current: Preferences->Settings in the "Additional Boards URL" box, you need to add the following link: http://arduino.esp8266.com/stable/package_esp8266com_index.json
Afterwards, you will find by searching the text "esp8266", in the boards manager, ESP8266 by "ESP8266 Community". Install the latest available version, connect the board via the chosen programmer in Flash Mode, select the port, and select the "Generic ESP8266" board.
Important: uploading a program to the board will disable the AT commands. Depending on the batch, the board may not execute AT commands from the factory (boards programmed in SPI DIO mode for example). To enable AT commands, follow the steps below:
Switching the board to AT mode:
With the board in Flash mode connected to the PC, run ESP FLASH DOWNLOAD TOOL. You will find the necessary files in the Download section of the product.
Use the settings from the image below:
Restore the correct address in the "Download Path Bin" section. The files are stored in order in the downloaded "ESP8266_FLASH" folder, starting with "blank.bin". Choose the correct port and press START.