Ai Thinker ESP-01S ESP8266 WiFi Module

(2 customer reviews)

Out of stock

Approx Restocking Date: 25 to 30 Days
SKU: 648394
  1. 1MB (8Mbit) Flash size.
  2. Very competitive price
  3. AP, STA, AP+STA modes available.
  4. Very simple AT commands, easy to use.
  5. Internal LWIP interface.


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Brand: Ai-Thinker
Category: Ai Thinker ESP Modules
Tags: ESP8266 series

The ESP-01S ESP8266 WiFi Module is a self-contained SOC with integrated TCP/IP protocol stack that can give any microcontroller access to your WiFi network. The ESP8266 is capable of either hosting an application or offloading all Wi-Fi networking functions from another application processor. Each ESP-01S ESP8266 module comes pre-programmed with an AT command set firmware, meaning, you can simply hook this up to your Arduino device and get about as much WiFi-ability as a WiFi Shield offers (and that’s just out of the box)! The ESP-01S ESP8266 module is an extremely cost-effective board with a huge, and ever-growing, community.

This module has a powerful enough on-board processing and storage capability that allows it to be integrated with the sensors and other application-specific devices through its GPIOs with minimal development up-front and minimal loading during runtime. Its high degree of on-chip integration allows for minimal external circuitry, including the front-end module, which is designed to occupy minimal PCB area. The ESP8266 supports APSD for VoIP applications and Bluetooth co-existence interfaces, it contains a self-calibrated RF allowing it to work under all operating conditions, and requires no external RF parts.

Note: Product image may vary from the actual product in terms of IC labels


  1. 1MB (8Mbit) Flash size.
  2. Very competitive price
  3. AP, STA, and AP+STA modes are available.
  4. Very simple AT commands, easy to use.
  5. Internal LWIP interface.
  6. Four pins interface, VCC-3V3, GND, TXD, and RXD. Two extra GPIOs can be used.
  7. AT commands firmware. New IC ESP8266ex

Package includes:

1 x Ai Thinker ESP-01S ESP8266 WiFi Module
SKU: 648394 Category: Tag:




IO Port


Frequency (MHz)


Power Supply(V)




Operating Temperature (°C)

-20 to 85

Shipping Weight 0.03 kg
Shipping Dimensions 8 × 5 × 1 cm
1 Month Warranty

This item is covered with a standard warranty of 1 month from the time of delivery against manufacturing defects only. This warranty is given for the benefit of Robu customers from any kind of manufacturing defects. Replacement will be done against manufacturing defects.

What voids warranty:

If the product is subject to misuse, tampering, static discharge, accident, water or fire damage, use of chemicals & soldered or altered in any way.

Based on 2 reviews

4.5 overall

Add a review

  1. rpselectronics11 (verified owner)

    Works flawlessly


  2. Turjasu (verified owner)

    This module is good for implementation of any IoT based product.


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Country Of Origin: China