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Esp-12s Module - Ai Thinker ESP-12S ESP8266 Serial WiFi Module
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  • Esp-12s Module - Ai Thinker ESP-12S ESP8266 Serial WiFi Module
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Ai Thinker ESP-12S ESP8266 Serial WiFi Module

Rated 4.53 out of 5 based on 36 customer ratings
(36 customer reviews)
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The smallest 802.11b/g/n Wi-Fi SOC module

Up to 160MHz clock speed

Built-in 10 bit high precision ADC

UART baud rate up to 4Mbps

Low power 32-bit CPU, can also serve as the application processor

Brand: Generic SKU: AI1703
Category: Ai Thinker ESP Modules
Tags: AI-Thinker, Buy Online India, ESP Module, ESP8266, ESP8266 Series, IoT, Microcontroller, WiFi, WiFi Module, Wireless, Zbotic

₹189.98 (₹161.00 + GST)

Description
Additional information
Warranty
COO

Looking for Esp-12s Module? Ai Thinker ESP-12S ESP8266 Serial WiFi Module is available at Zbotic with fast shipping across India.

Ai Thinker ESP-12S ESP8266 Serial WiFi Module

Introducing the Ai Thinker ESP-12S ESP8266 Serial WiFi Module, a compact and powerful solution for wireless connectivity in various applications. This module combines industry-leading technology with ultra-low power consumption, making it suitable for a wide range of IoT projects, home automation, industrial control, and more.

The Ai Thinker ESP-12S ESP8266 Serial WiFi Module offers a competitive package size and utilizes ultra-low power technology. It’s designed for versatility and can be used in diverse networking scenarios, including home automation, industrial control, baby monitors, wearable electronics, and wireless location sensing devices.


Esp-12s Module – Features:

  • Compact Design: The smallest 802.11b/g/n Wi-Fi SOC module, ideal for applications with space constraints.
  • High Performance: Equipped with a low power 32-bit CPU, capable of reaching clock speeds of up to 160MHz. It can also serve as the application processor, enhancing overall performance.
  • Integrated Features: Built-in 10-bit high precision ADC, UART/GPIO/IIC/PWM/ADC support, and embedded LWIP protocol stack for seamless integration into various projects.
  • Easy Integration: Packaged in SMD-16 for easy welding, allowing for rapid production and high reliability of connections.
  • Versatile Connectivity: Supports multiple sleep patterns, UART baud rates up to 4Mbps, and various operation modes including STA, AP, and STA + AP.
  • Advanced Technologies: Features support for Smart Config/AirKiss technology, remote firmware upgrade (FOTA), and general AT commands for quick configuration.
  • Development Environment: Supports development in both Windows and Linux environments, providing flexibility for developers.

Upgrade your IoT projects with the Ai Thinker ESP-12S ESP8266 Serial WiFi Module, offering unparalleled performance, reliability, and versatility for your wireless connectivity needs.


Specifications:

Module Model ESP-12S
Package/Case SMD16
SPI Flash Default 32Mbit
Antenna Type PCB
Input Supply Range (VDC) 3.0 ~ 3.6
Transmit Power (dBm) 802.11b: 16±2 dBm (@11Mbps), 802.11g: 14±2 dBm (@54Mbps), 802.11n: 13±2 dBm (@HT20, MCS7)
Frequency Range 2412 ~ 2484MHz
IO Port 9
Interface UART/GPIO/ADC/PWM
Receiving Sensitivity 54 Mbps (3/4 64-QAM): -70dBm, 6 Mbps (1/2 BPSK): -88dBm, CCK, 1 Mbps : -90dBm, CCK, 11 Mbps: -85dBm, HT20, MCS7 (65 Mbps, 72.2 Mbps): -67dBm
UART Baudrate Support 300 ~ 4608000 bps ˈDefault 115200 bps
Operating Temperature (°C) -20 to 85
Security WEP/WPA-PSK/WPA2-PSK

Package includes:

1 x Ai Thinker ESP-12S ESP8266 Serial WiFi Module


Datasheet:

pdf 2

Ai Thinker ESP-12S ESP8266 Serial WiFi Module Overview

The Ai Thinker ESP-12S ESP8266 Serial WiFi Module is a compact Wi-Fi System-on-Chip designed for seamless wireless connectivity in embedded projects. It integrates a low-power 32-bit CPU and supports 802.11b/g/n, making it ideal for IoT devices, home automation, and remote control applications.

Key Features of Ai Thinker ESP-12S ESP8266 Serial WiFi Module

  • Supports 802.11b/g/n Wi-Fi standards for reliable wireless networking
  • Up to 160 MHz clock speed on a 32-bit low-power CPU for fast processing
  • Built-in 10-bit high-precision ADC for analog sensor interfacing
  • High-speed UART interface with baud rates up to 4 Mbps
  • Ultra-compact form factor for space-constrained designs
  • Genuine Ai Thinker module with fast shipping from Zbotic

Applications and Use Cases

  • IoT sensor nodes for environmental monitoring (temperature, humidity)
  • Home automation controllers and smart lighting systems
  • Wearable electronics requiring wireless data transmission
  • Baby monitors and remote alert systems
  • Industrial equipment status reporting and control
  • Wireless data logging and telemetry

How to Use Ai Thinker ESP-12S ESP8266 Serial WiFi Module

Power the module with a 3.3 V regulated supply, connect GND, TX/RX lines to your USB-to-serial adapter or microcontroller, then configure via AT commands or flash custom firmware over the UART interface. Use the ADC0 pin for analog inputs and set up Wi-Fi credentials through standard ESP8266 command sets.

Why Buy from Zbotic?

  • Genuine Products: All items sourced from authorized distributors
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  • COD Available: Cash on Delivery, UPI, cards, net banking
  • Technical Support: Expert help for setup and troubleshooting
  • Easy Returns: Hassle-free replacement for defective products

Frequently Asked Questions

Can I use the ESP-12S as a standalone controller?

Yes. The onboard 32-bit CPU can run user applications at up to 160 MHz, allowing the ESP-12S to function without an external microcontroller when programmed with custom firmware.

What UART baud rates does the ESP-12S support?

The module’s UART interface supports baud rates up to 4 Mbps, enabling high-speed serial communication with host microcontrollers or USB-to-serial converters.

How do I read analog sensors with the ESP-12S?

The ESP-12S includes a built-in 10-bit ADC on the ADC0 pin. Use your firmware’s analogRead function or AT commands to sample sensor voltages and integrate readings into your IoT application.

Tags: AI-Thinker Buy Online India ESP Module ESP8266 ESP8266 Series IoT Microcontroller WiFi WiFi Module Wireless Zbotic
Also in Ai Thinker ESP Modules:
NF-03 Wireless Transceiver ModuleAi-Thinker Ai-M62-12F Wi-Fi 6+BLE5.3 ModuleAi Thinker LoRa-Ra-01 RF Transceiver ModuleAi Thinker NF-01-S Wireless Transceiver Module

Technical Specifications

ModelESP-12S
Interface / ProtocolWiFi
SKUAI1703
Weight0.0 kg
AvailabilityOut of Stock

Applications & Use Cases

The Ai Thinker ESP-12S ESP8266 Serial WiFi Module is a versatile ai thinker esp modules used across a wide range of applications including WiFi-enabled IoT devices, smart home sensors, web servers, mesh networks, and wireless data logging.

Common use cases:

  • Connecting an Arduino project to WiFi
  • Building a smart plug or switch
  • Creating a wireless sensor network

This product is ideal for IoT developers, home automation enthusiasts, and embedded engineers.

Technical Tip: ESP32 supports both WiFi and Bluetooth. ESP8266 is WiFi-only but more affordable. Both are programmable via Arduino IDE or ESP-IDF.

Shipping & Delivery

  • Free shipping on orders above ₹999 across India
  • Dispatched within 1-3 business days
  • Expected delivery: 3-7 business days depending on location
  • Secure packaging to ensure safe transit of electronic components
Weight 0.0 kg
15 Days Warranty

Please note that this item is only covered by a standard supplier warranty against manufacturing defects for a period of 15days from the time of delivery. It is important to understand that only manufacturing defects are covered under this warranty, and any other issues will not be considered for reimbursement or replacement. We strongly advise inspecting the product upon delivery to ensure it meets your expectations. In case of any manufacturing defects, we guarantee reimbursement or replacement.


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.

Tags: AI-Thinker Buy Online India ESP Module ESP8266 ESP8266 Series IoT Microcontroller WiFi WiFi Module Wireless Zbotic
Also in Ai Thinker ESP Modules:
Ai-Thinker Rd-03LAi Thinker ESP-01M WiFi ModuleAi-Thinker Ai-M62-12F Wi-Fi 6+BLE5.3 ModuleAi Thinker ESP-07S ESP8266 Serial WiFi Module
Country Of Origin: China

36 reviews for Ai Thinker ESP-12S ESP8266 Serial WiFi Module

  1. Avatar of Kavya Tiwari
    Rated 3 out of 5

    Kavya Tiwari (verified owner) – April 12, 2023

    Average Ai Thinker ESP-12S ESP8266 Serial WiFi. WiFi drops occasionally but works for basic projects.

  2. Avatar of Zubin Verma
    Rated 5 out of 5

    Zubin Verma (verified owner) – April 20, 2023

    Love this Ai Thinker ESP-12S ESP8266 Serial WiFi. Built a smart switch with it. Works with Home Assistant perfectly.

  3. Avatar of Sandhya Luthra
    Rated 5 out of 5

    Sandhya Luthra (verified owner) – June 18, 2023

    Excellent for smart home projects. This Ai Thinker ESP-12S ESP8266 Serial WiFi connects reliably to my router.

  4. Avatar of Sakshi Bhandari
    Rated 5 out of 5

    Sakshi Bhandari (verified owner) – August 13, 2023

    Outstanding Ai Thinker ESP-12S ESP8266 Serial WiFi! Programmed it with Arduino IDE. All features work as documented.

  5. Avatar of Lokesh Sen
    Rated 3 out of 5

    Lokesh Sen (verified owner) – October 14, 2023

    Average Ai Thinker ESP-12S ESP8266 Serial WiFi. WiFi drops occasionally but works for basic projects.

  6. Avatar of Chetan Dubey
    Rated 5 out of 5

    Chetan Dubey (verified owner) – November 16, 2023

    Superb Ai Thinker ESP-12S ESP8266 Serial WiFi! Using it for my weather monitoring station. WiFi range is impressive.

  7. Avatar of Atharv Parekh
    Rated 4 out of 5

    Atharv Parekh (verified owner) – December 5, 2023

    Good quality Ai Thinker ESP-12S ESP8266 Serial WiFi. Flash memory is sufficient for most projects.

  8. Avatar of Kunal Shah
    Rated 3 out of 5

    Kunal Shah (verified owner) – December 6, 2023

    Average Ai Thinker ESP-12S ESP8266 Serial WiFi. WiFi drops occasionally but works for basic projects.

  9. Avatar of Daksh Patel
    Rated 5 out of 5

    Daksh Patel (verified owner) – January 4, 2024

    Great quality Ai Thinker ESP-12S ESP8266 Serial WiFi. Flashed with ESPHome and it works beautifully.

  10. Avatar of Lalit Saxena
    Rated 5 out of 5

    Lalit Saxena (verified owner) – January 17, 2024

    Great Ai Thinker ESP-12S ESP8266 Serial WiFi. OTA updates work perfectly. Using 5 of these around my house.

  11. Avatar of Priya Banerjee
    Rated 5 out of 5

    Priya Banerjee (verified owner) – January 29, 2024

    This Ai Thinker ESP-12S ESP8266 Serial WiFi is a beast for the price. Running a web server on it with no issues.

  12. Avatar of Vivek Shah
    Rated 5 out of 5

    Vivek Shah (verified owner) – August 2, 2024

    Outstanding Ai Thinker ESP-12S ESP8266 Serial WiFi! Programmed it with Arduino IDE. All features work as documented.

  13. Avatar of Naman Gill
    Rated 5 out of 5

    Naman Gill (verified owner) – September 2, 2024

    Great Ai Thinker ESP-12S ESP8266 Serial WiFi. OTA updates work perfectly. Using 5 of these around my house.

  14. Avatar of Rahul Shetty
    Rated 5 out of 5

    Rahul Shetty (verified owner) – September 17, 2024

    This Ai Thinker ESP-12S ESP8266 Serial WiFi is a beast for the price. Running a web server on it with no issues.

  15. Avatar of Shreyas Bisht
    Rated 5 out of 5

    Shreyas Bisht (verified owner) – September 21, 2024

    Superb Ai Thinker ESP-12S ESP8266 Serial WiFi! Using it for my weather monitoring station. WiFi range is impressive.

  16. Avatar of Ishan Bhandari
    Rated 4 out of 5

    Ishan Bhandari (verified owner) – September 23, 2024

    Good Ai Thinker ESP-12S ESP8266 Serial WiFi. WiFi works well. Sometimes needs a reset but overall solid.

  17. Avatar of Ojas Tiwari
    Rated 5 out of 5

    Ojas Tiwari (verified owner) – October 5, 2024

    Excellent for smart home projects. This Ai Thinker ESP-12S ESP8266 Serial WiFi connects reliably to my router.

  18. Avatar of Isha Negi
    Rated 5 out of 5

    Isha Negi – November 21, 2024

    Love this Ai Thinker ESP-12S ESP8266 Serial WiFi. Built a smart switch with it. Works with Home Assistant perfectly.

  19. Avatar of Amit Kohli
    Rated 4 out of 5

    Amit Kohli – January 19, 2025

    Decent Ai Thinker ESP-12S ESP8266 Serial WiFi. Had to install CP2102 drivers but works fine after that.

  20. Avatar of Nakul Bajaj
    Rated 4 out of 5

    Nakul Bajaj (verified owner) – February 3, 2025

    Decent Ai Thinker ESP-12S ESP8266 Serial WiFi. Had to install CP2102 drivers but works fine after that.

  21. Avatar of Vijay Bhat
    Rated 5 out of 5

    Vijay Bhat (verified owner) – May 26, 2025

    This Ai Thinker ESP-12S ESP8266 Serial WiFi is a beast for the price. Running a web server on it with no issues.

  22. Avatar of Farhan Bose
    Rated 5 out of 5

    Farhan Bose (verified owner) – May 26, 2025

    Excellent Ai Thinker ESP-12S ESP8266 Serial WiFi! WiFi connectivity is strong and stable. Perfect for IoT projects.

  23. Avatar of Saurabh Saxena
    Rated 5 out of 5

    Saurabh Saxena (verified owner) – June 1, 2025

    Great Ai Thinker ESP-12S ESP8266 Serial WiFi. OTA updates work perfectly. Using 5 of these around my house.

  24. Avatar of Kavya Ghosh
    Rated 4 out of 5

    Kavya Ghosh (verified owner) – June 6, 2025

    Good quality Ai Thinker ESP-12S ESP8266 Serial WiFi. Flash memory is sufficient for most projects.

  25. Avatar of Utkarsh Vyas
    Rated 5 out of 5

    Utkarsh Vyas – June 17, 2025

    Perfect for my IoT project. This Ai Thinker ESP-12S ESP8266 Serial WiFi has excellent WiFi performance.

  26. Avatar of Rashmi Bhandari
    Rated 5 out of 5

    Rashmi Bhandari (verified owner) – June 17, 2025

    This Ai Thinker ESP-12S ESP8266 Serial WiFi is amazing for home automation. Connected all my smart devices easily.

  27. Avatar of Jayesh Mittal
    Rated 3 out of 5

    Jayesh Mittal (verified owner) – July 15, 2025

    Average Ai Thinker ESP-12S ESP8266 Serial WiFi. WiFi drops occasionally but works for basic projects.

  28. Avatar of Raghav Pandey
    Rated 4 out of 5

    Raghav Pandey (verified owner) – July 24, 2025

    Good Ai Thinker ESP-12S ESP8266 Serial WiFi. WiFi works well. Sometimes needs a reset but overall solid.

  29. Avatar of Nakul Gill
    Rated 5 out of 5

    Nakul Gill (verified owner) – August 18, 2025

    Love this Ai Thinker ESP-12S ESP8266 Serial WiFi. Built a smart switch with it. Works with Home Assistant perfectly.

  30. Avatar of Isha Pandey
    Rated 5 out of 5

    Isha Pandey (verified owner) – October 11, 2025

    Superb Ai Thinker ESP-12S ESP8266 Serial WiFi! Using it for my weather monitoring station. WiFi range is impressive.

  31. Avatar of Mukesh Mishra
    Rated 5 out of 5

    Mukesh Mishra – November 4, 2025

    Love this Ai Thinker ESP-12S ESP8266 Serial WiFi. Built a smart switch with it. Works with Home Assistant perfectly.

  32. Avatar of Ankit Modi
    Rated 5 out of 5

    Ankit Modi (verified owner) – December 13, 2025

    Perfect for my IoT project. This Ai Thinker ESP-12S ESP8266 Serial WiFi has excellent WiFi performance.

  33. Avatar of Vaishali Das
    Rated 3 out of 5

    Vaishali Das (verified owner) – January 7, 2026

    Okay Ai Thinker ESP-12S ESP8266 Serial WiFi. Took time to figure out the pin mapping but functional.

  34. Avatar of Eshan Saxena
    Rated 5 out of 5

    Eshan Saxena (verified owner) – January 15, 2026

    This Ai Thinker ESP-12S ESP8266 Serial WiFi is amazing for home automation. Connected all my smart devices easily.

  35. Avatar of Rohan Sen
    Rated 4 out of 5

    Rohan Sen (verified owner) – January 30, 2026

    Good Ai Thinker ESP-12S ESP8266 Serial WiFi. WiFi works well. Sometimes needs a reset but overall solid.

  36. Avatar of Tushar Hegde
    Rated 5 out of 5

    Tushar Hegde (verified owner) – February 20, 2026

    Excellent Ai Thinker ESP-12S ESP8266 Serial WiFi! WiFi connectivity is strong and stable. Perfect for IoT projects.

Only logged in customers who have purchased this product may leave a review.

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