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Ai Thinker ESP-01S ESP8266 WiFi Module
Add wireless connectivity to any microcontroller project with the Ai Thinker ESP-01S, a compact and reliable WiFi module powered by the ESP8266 chipset. This tiny yet powerful module enables IoT applications, remote control, and cloud communication with minimal wiring and cost. Available now at The Engineer Store, Bengaluru, with fast shipping and full technical support.
Specifications
| Module | Ai Thinker ESP-01S |
| Chipset | ESP8266EX |
| Operating Voltage | 3.3V DC |
| WiFi Standard | IEEE 802.11 b/g/n (2.4 GHz) |
| Flash Memory | 1 MB (8 Mbit) |
| GPIO Pins | 2 (GPIO0, GPIO2) |
| Communication Interface | UART (TX/RX) at 115200 baud default |
| Antenna | Onboard PCB Antenna |
| WiFi Modes | Station (STA), Access Point (AP), STA+AP |
| Security Protocols | WPA/WPA2-PSK |
| Processor | Tensilica L106 32-bit RISC, 80 MHz (up to 160 MHz) |
| Operating Temperature | -40 degreesC to +125 degreesC |
| Pin Count | 8-pin (2x4 header) |
| Dimensions | Approx. 24.75 mm x 14.5 mm |
| Firmware | Pre-loaded with AT command firmware |
| Programmable | Yes - via Arduino IDE, MicroPython, Lua (NodeMCU), or AT commands |
| Type | WiFi Module / IoT Component |
| Origin | Original Ai Thinker - Authentic |
| Warranty | 7-day warranty on manufacturing defects |
| Support | Email & WhatsApp 24/7 |
Key Features
- Full WiFi Connectivity: Supports 802.11 b/g/n with Station, Access Point, and combined modes for flexible network configurations.
- Upgraded 1 MB Flash: The ESP-01S features double the flash memory compared to the original ESP-01, allowing more complex firmware and OTA update capability.
- Ultra-Compact Form Factor: Measures just 24.75 x 14.5 mm, making it easy to embed into space-constrained designs and breadboard prototypes.
- Simple UART Interface: Communicates with Arduino, STM32, Raspberry Pi, and other microcontrollers via standard serial TX/RX lines.
- AT Command Ready: Ships with AT firmware pre-loaded, so you can start sending WiFi commands immediately without any programming.
- Arduino IDE Compatible: Flash custom firmware using the Arduino IDE with the ESP8266 board package for full standalone operation.
- Low Power Modes: Supports deep sleep mode drawing as low as ~20 uA, ideal for battery-powered IoT sensor nodes.
- TCP/UDP Support: Built-in TCP/IP stack enables direct HTTP requests, MQTT communication, and socket-based data transfer.
- Onboard PCB Antenna: No external antenna required - provides reliable wireless range for typical indoor IoT applications.
- Blue LED Indicator: Onboard LED connected to GPIO2 for easy status indication and debugging.
Why Choose the ESP-01S?
- 100% authentic Ai Thinker module sourced from authorized distributors
- Most affordable way to add WiFi to any existing microcontroller project
- Massive community support with thousands of tutorials, libraries, and example projects available online
- Works seamlessly with popular IoT platforms including Blynk, ThingSpeak, Firebase, AWS IoT, and Home Assistant
- Can function as a standalone microcontroller or as a WiFi co-processor for another MCU
- 1-5 day shipping, 7-8 day delivery across India from our Bengaluru warehouse
- Expert technical support included with every purchase
Pin Configuration
| VCC | 3.3V Power Supply (do NOT connect to 5V) |
| GND | Ground |
| TX | UART Transmit (connect to MCU RX) |
| RX | UART Receive (connect to MCU TX) |
| GPIO0 | General Purpose I/O / Flash Mode Select (pull LOW for programming) |
| GPIO2 | General Purpose I/O / Connected to onboard blue LED |
Frequently Asked Questions
When will I receive my order?
Products ship within 1-5 days from our Bengaluru warehouse. Delivery within 7-8 days to most locations across India.
Is technical support available?
Yes, 24/7 support via email and WhatsApp for setup, troubleshooting, and application guidance.
What is your return policy?
7-day returns on manufacturing defects only. Full refund or replacement. Not applicable for user damage or misuse.
Are bulk discounts available?
Yes, wholesale pricing on orders of 10+ units. Contact us via WhatsApp or email for a custom quote.
Buy Ai Thinker ESP-01S ESP8266 WiFi Module Online in India
Purchase the Ai Thinker ESP-01S ESP8266 WiFi Module online at The Engineer Store - India's most trusted electronics components store. We deliver across all major cities including Bengaluru, Mumbai, Delhi, Chennai, Hyderabad, Pune, Kolkata, Ahmedabad, Jaipur, and Surat. Get the best price on Ai Thinker ESP-01S ESP8266 WiFi Module with fast 1-5 day shipping from our Bengaluru warehouse. All products are 100% authentic, sourced from authorized distributors with 7-day warranty on manufacturing defects.
Looking to buy Ai Thinker ESP-01S ESP8266 WiFi Module at the best price in India? The Engineer Store offers competitive pricing, bulk discounts for orders of 10+ units, and dedicated technical support via email and WhatsApp. Whether you are a hobbyist, student, or professional engineer, we have everything you need for your electronics projects.
Ai Thinker ESP-01S ESP8266 WiFi Module
Add wireless connectivity to any microcontroller project with the Ai Thinker ESP-01S, a compact and reliable WiFi module powered by the ESP8266 chipset. This tiny yet powerful module enables IoT applications, remote control, and cloud communication with minimal wiring and cost. Available now at The Engineer Store, Bengaluru, with fast shipping and full technical support.
Specifications
| Module | Ai Thinker ESP-01S |
| Chipset | ESP8266EX |
| Operating Voltage | 3.3V DC |
| WiFi Standard | IEEE 802.11 b/g/n (2.4 GHz) |
| Flash Memory | 1 MB (8 Mbit) |
| GPIO Pins | 2 (GPIO0, GPIO2) |
| Communication Interface | UART (TX/RX) at 115200 baud default |
| Antenna | Onboard PCB Antenna |
| WiFi Modes | Station (STA), Access Point (AP), STA+AP |
| Security Protocols | WPA/WPA2-PSK |
| Processor | Tensilica L106 32-bit RISC, 80 MHz (up to 160 MHz) |
| Operating Temperature | -40 degreesC to +125 degreesC |
| Pin Count | 8-pin (2x4 header) |
| Dimensions | Approx. 24.75 mm x 14.5 mm |
| Firmware | Pre-loaded with AT command firmware |
| Programmable | Yes - via Arduino IDE, MicroPython, Lua (NodeMCU), or AT commands |
| Type | WiFi Module / IoT Component |
| Origin | Original Ai Thinker - Authentic |
| Warranty | 7-day warranty on manufacturing defects |
| Support | Email & WhatsApp 24/7 |
Key Features
- Full WiFi Connectivity: Supports 802.11 b/g/n with Station, Access Point, and combined modes for flexible network configurations.
- Upgraded 1 MB Flash: The ESP-01S features double the flash memory compared to the original ESP-01, allowing more complex firmware and OTA update capability.
- Ultra-Compact Form Factor: Measures just 24.75 x 14.5 mm, making it easy to embed into space-constrained designs and breadboard prototypes.
- Simple UART Interface: Communicates with Arduino, STM32, Raspberry Pi, and other microcontrollers via standard serial TX/RX lines.
- AT Command Ready: Ships with AT firmware pre-loaded, so you can start sending WiFi commands immediately without any programming.
- Arduino IDE Compatible: Flash custom firmware using the Arduino IDE with the ESP8266 board package for full standalone operation.
- Low Power Modes: Supports deep sleep mode drawing as low as ~20 uA, ideal for battery-powered IoT sensor nodes.
- TCP/UDP Support: Built-in TCP/IP stack enables direct HTTP requests, MQTT communication, and socket-based data transfer.
- Onboard PCB Antenna: No external antenna required - provides reliable wireless range for typical indoor IoT applications.
- Blue LED Indicator: Onboard LED connected to GPIO2 for easy status indication and debugging.
Why Choose the ESP-01S?
- 100% authentic Ai Thinker module sourced from authorized distributors
- Most affordable way to add WiFi to any existing microcontroller project
- Massive community support with thousands of tutorials, libraries, and example projects available online
- Works seamlessly with popular IoT platforms including Blynk, ThingSpeak, Firebase, AWS IoT, and Home Assistant
- Can function as a standalone microcontroller or as a WiFi co-processor for another MCU
- 1-5 day shipping, 7-8 day delivery across India from our Bengaluru warehouse
- Expert technical support included with every purchase
Pin Configuration
| VCC | 3.3V Power Supply (do NOT connect to 5V) |
| GND | Ground |
| TX | UART Transmit (connect to MCU RX) |
| RX | UART Receive (connect to MCU TX) |
| GPIO0 | General Purpose I/O / Flash Mode Select (pull LOW for programming) |
| GPIO2 | General Purpose I/O / Connected to onboard blue LED |
Frequently Asked Questions
When will I receive my order?
Products ship within 1-5 days from our Bengaluru warehouse. Delivery within 7-8 days to most locations across India.
Is technical support available?
Yes, 24/7 support via email and WhatsApp for setup, troubleshooting, and application guidance.
What is your return policy?
7-day returns on manufacturing defects only. Full refund or replacement. Not applicable for user damage or misuse.
Are bulk discounts available?
Yes, wholesale pricing on orders of 10+ units. Contact us via WhatsApp or email for a custom quote.
Buy Ai Thinker ESP-01S ESP8266 WiFi Module Online in India
Purchase the Ai Thinker ESP-01S ESP8266 WiFi Module online at The Engineer Store - India's most trusted electronics components store. We deliver across all major cities including Bengaluru, Mumbai, Delhi, Chennai, Hyderabad, Pune, Kolkata, Ahmedabad, Jaipur, and Surat. Get the best price on Ai Thinker ESP-01S ESP8266 WiFi Module with fast 1-5 day shipping from our Bengaluru warehouse. All products are 100% authentic, sourced from authorized distributors with 7-day warranty on manufacturing defects.
Looking to buy Ai Thinker ESP-01S ESP8266 WiFi Module at the best price in India? The Engineer Store offers competitive pricing, bulk discounts for orders of 10+ units, and dedicated technical support via email and WhatsApp. Whether you are a hobbyist, student, or professional engineer, we have everything you need for your electronics projects.