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Ai Thinker ESP-12S ESP8266 Serial WiFi Module
Add reliable, compact WiFi connectivity to your embedded projects with the Ai Thinker ESP-12S - an enhanced version of the popular ESP-12 series. Built around the powerful ESP8266EX SoC, this module features improved RF shielding, an optimized antenna design, and a robust metal enclosure for superior wireless performance. Ideal for IoT devices, home automation, smart sensors, and any application requiring seamless 802.11 b/g/n connectivity. Available at The Engineer Store, Bengaluru with fast shipping, 7-day warranty on manufacturing defects, and dedicated technical support.
Specifications
| Manufacturer | Ai-Thinker |
| Model | ESP-12S |
| Core Chipset | ESP8266EX (Tensilica L106 32-bit RISC processor) |
| Operating Frequency | 80 MHz (up to 160 MHz) |
| Flash Memory | 4 MB (32 Mbit) SPI Flash |
| WiFi Standard | IEEE 802.11 b/g/n (2.4 GHz) |
| WiFi Modes | Station, SoftAP, Station + SoftAP |
| Security Protocols | WPA / WPA2 / WEP / Open |
| Antenna | Onboard PCB trace antenna (enhanced design) |
| GPIO Pins | 11 GPIOs (active, active-low, active-high available) |
| ADC | 1-channel 10-bit ADC (0-1V input range) |
| Communication Interfaces | UART, SPI, I2C, I2S, PWM |
| UART Baud Rate | Default 115200 bps (configurable up to 4.5 Mbps) |
| Operating Voltage | 3.0V - 3.6V DC (3.3V typical) |
| Operating Current | ~80 mA average (transmit peak ~170 mA) |
| Deep Sleep Current | ~20 uA |
| Output Power | +20 dBm (802.11b mode) |
| Receiver Sensitivity | -91 dBm (11 Mbps, 802.11b) |
| Operating Temperature | -40 degreesC to +85 degreesC |
| Module Dimensions | 24 mm x 16 mm x 3 mm (approx.) |
| Pad Pitch | 2.0 mm (castellated half-hole pads for SMD or through-hole) |
| Shielding | Metal RF shielding can for improved EMI performance |
| Firmware Support | AT Command firmware (factory default), Arduino Core, MicroPython, NodeMCU Lua, ESP-IDF compatible |
| Certifications | FCC, CE, RoHS compliant |
| Origin | Original Ai-Thinker - Authentic |
| Warranty | 7-day warranty on manufacturing defects |
| Support | Email & WhatsApp 24/7 Technical Support |
Key Features
- Enhanced ESP-12 Design: The ESP-12S is Ai-Thinker's improved revision with better antenna matching, optimized GPIO pull-up/pull-down resistors built in, and removal of unused pins - resulting in more reliable boot-up and fewer external component requirements.
- Powerful ESP8266EX SoC: 32-bit Tensilica processor running at 80/160 MHz with full TCP/IP stack, capable of running complex application logic alongside WiFi communication.
- 4 MB Onboard Flash: Generous flash storage supports OTA (Over-The-Air) firmware updates, SPIFFS/LittleFS file systems, and large application binaries.
- The Engineer Store WiFi Performance: +20 dBm transmit power and -91 dBm receive sensitivity deliver reliable wireless range, enhanced by the improved onboard PCB antenna and metal shielding.
- Ultra-Low Deep Sleep: ~20 uA deep sleep current makes it ideal for battery-powered IoT sensors and remote monitoring applications.
- Versatile I/O: 11 GPIO pins with support for UART, SPI, I2C, I2S, PWM, and a 10-bit ADC channel - enough for most sensor and actuator interfacing needs.
- Compact & Solderable: Tiny 24x16 mm footprint with castellated edge pads allows easy SMD reflow soldering or manual through-hole adapter mounting.
- Broad Ecosystem Compatibility: Program with Arduino IDE, PlatformIO, MicroPython, NodeMCU Lua, or Espressif's native
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-12S ESP8266 Serial WiFi Module Online in India
Purchase the Ai Thinker ESP-12S ESP8266 Serial 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-12S ESP8266 Serial 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-12S ESP8266 Serial 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-12S ESP8266 Serial WiFi Module
Add reliable, compact WiFi connectivity to your embedded projects with the Ai Thinker ESP-12S - an enhanced version of the popular ESP-12 series. Built around the powerful ESP8266EX SoC, this module features improved RF shielding, an optimized antenna design, and a robust metal enclosure for superior wireless performance. Ideal for IoT devices, home automation, smart sensors, and any application requiring seamless 802.11 b/g/n connectivity. Available at The Engineer Store, Bengaluru with fast shipping, 7-day warranty on manufacturing defects, and dedicated technical support.
Specifications
| Manufacturer | Ai-Thinker |
| Model | ESP-12S |
| Core Chipset | ESP8266EX (Tensilica L106 32-bit RISC processor) |
| Operating Frequency | 80 MHz (up to 160 MHz) |
| Flash Memory | 4 MB (32 Mbit) SPI Flash |
| WiFi Standard | IEEE 802.11 b/g/n (2.4 GHz) |
| WiFi Modes | Station, SoftAP, Station + SoftAP |
| Security Protocols | WPA / WPA2 / WEP / Open |
| Antenna | Onboard PCB trace antenna (enhanced design) |
| GPIO Pins | 11 GPIOs (active, active-low, active-high available) |
| ADC | 1-channel 10-bit ADC (0-1V input range) |
| Communication Interfaces | UART, SPI, I2C, I2S, PWM |
| UART Baud Rate | Default 115200 bps (configurable up to 4.5 Mbps) |
| Operating Voltage | 3.0V - 3.6V DC (3.3V typical) |
| Operating Current | ~80 mA average (transmit peak ~170 mA) |
| Deep Sleep Current | ~20 uA |
| Output Power | +20 dBm (802.11b mode) |
| Receiver Sensitivity | -91 dBm (11 Mbps, 802.11b) |
| Operating Temperature | -40 degreesC to +85 degreesC |
| Module Dimensions | 24 mm x 16 mm x 3 mm (approx.) |
| Pad Pitch | 2.0 mm (castellated half-hole pads for SMD or through-hole) |
| Shielding | Metal RF shielding can for improved EMI performance |
| Firmware Support | AT Command firmware (factory default), Arduino Core, MicroPython, NodeMCU Lua, ESP-IDF compatible |
| Certifications | FCC, CE, RoHS compliant |
| Origin | Original Ai-Thinker - Authentic |
| Warranty | 7-day warranty on manufacturing defects |
| Support | Email & WhatsApp 24/7 Technical Support |
Key Features
- Enhanced ESP-12 Design: The ESP-12S is Ai-Thinker's improved revision with better antenna matching, optimized GPIO pull-up/pull-down resistors built in, and removal of unused pins - resulting in more reliable boot-up and fewer external component requirements.
- Powerful ESP8266EX SoC: 32-bit Tensilica processor running at 80/160 MHz with full TCP/IP stack, capable of running complex application logic alongside WiFi communication.
- 4 MB Onboard Flash: Generous flash storage supports OTA (Over-The-Air) firmware updates, SPIFFS/LittleFS file systems, and large application binaries.
- The Engineer Store WiFi Performance: +20 dBm transmit power and -91 dBm receive sensitivity deliver reliable wireless range, enhanced by the improved onboard PCB antenna and metal shielding.
- Ultra-Low Deep Sleep: ~20 uA deep sleep current makes it ideal for battery-powered IoT sensors and remote monitoring applications.
- Versatile I/O: 11 GPIO pins with support for UART, SPI, I2C, I2S, PWM, and a 10-bit ADC channel - enough for most sensor and actuator interfacing needs.
- Compact & Solderable: Tiny 24x16 mm footprint with castellated edge pads allows easy SMD reflow soldering or manual through-hole adapter mounting.
- Broad Ecosystem Compatibility: Program with Arduino IDE, PlatformIO, MicroPython, NodeMCU Lua, or Espressif's native
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-12S ESP8266 Serial WiFi Module Online in India
Purchase the Ai Thinker ESP-12S ESP8266 Serial 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-12S ESP8266 Serial 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-12S ESP8266 Serial 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.