Product description:
The Espressif ESP8266 Serial Port WiFi Transceiver Module (ESP-05) is a compact, versatile device that provides wireless Internet connectivity to microcontroller platforms like Arduino. It boasts a straightforward pin layout and serial communication interface for easy integration into projects, needing just two wires (TX/RX) for connection. The module autonomously manages WiFi operations, simplifying microcontroller code by removing unnecessary complexity. It comes equipped with robust on-board processing and storage capabilities, which facilitate interfacing with sensors and devices via GPIOs without significant development effort. Moreover, it offers control through SPI and UART interfaces, making it adaptable to various applications. The module’s AT command support ensures effortless WiFi network connections and TCP/IP communications, eliminating the need for a TCP/IP stack on the microcontroller.
Features
- WIFI Direct (P2P), SOFT-AP
- The AT command is perfect, efficient, concise.
- Support three modes: AP, STA and AP+STA coexistence mode the TCP/IP protocol suit.
- Integrated TCP/IP protocol stack
- Integrated TR switch, balun, LNA, power amplifier and matching network
- Integrated PLLs, regulators, DCXO and power management units
- +19.5dBm output power in 802.11b mode
- Power down leakage current of <10uA
- Integrated low power 32-bit CPU could be used as application processor.
- SDIO 1.1/2.0, SPI, UART
- STBC, 1×1 MIMO, 2×1 MIMO
- A-MPDU & A-MSDU aggregation & 0.4ms guard interval
- Wake up and transmit packets in < 2ms.
- Standby power consumption of < 1.0mW (DTIM3)
- ESP-05 SMD package, only leads to serial and RST pin, small external antenna.
Specification:
| WIFI Modes | WIFI Direct (P2P), SOFT-AP |
|---|---|
| AT Command Support | Efficient and concise for easy configuration |
| Supported Modes | AP, STA, and AP+STA coexistence mode for versatile usage |
| Protocol Stack | Integrated TCP/IP protocol stack for seamless communication |
| Integrated Components | TR switch, balun, LNA, power amplifier, matching network, PLLs, regulators, DCXO, power management units |
| Output Power | +19.5dBm in 802.11b mode for reliable signal transmission |
| Power Consumption | Power down leakage current of <10uA, standby power consumption of <1.0mW (DTIM3) |
| CPU | Integrated low-power 32-bit CPU that can be utilized as an application processor |
| Interfaces | SDIO 1.1/2.0, SPI, UART for flexible connectivity options |
| Wireless Features | STBC, 1×1 MIMO, 2×1 MIMO, A-MPDU & A-MSDU aggregation, 0.4ms guard interval |
Package Includes
- 1x Espressif ESP8266 Serial Port WiFi Transceiver Module (ESP-05)
- 1x Single row of unsoldered mail strip
Technical Specifications
| Model | ESP8266 |
|---|---|
| Interface / Protocol | WiFi |
| SKU | AI0184 |
| Weight | 0.0 kg |
| Availability | In Stock |
Applications & Use Cases
The Espressif ESP8266 Serial Port WiFi Transceiver Module (ESP-05) is a versatile other esp wifi modules used across a wide range of applications including WiFi connectivity for microcontrollers, IoT sensor nodes, remote monitoring, OTA firmware updates, and cloud-connected devices.
Common use cases:
- Adding WiFi to an existing Arduino project
- Building a cloud-connected weather station
- Enabling remote firmware updates
This product is ideal for IoT developers and electronics hobbyists.
Technical Tip: ESP-WROOM-32 modules need proper decoupling capacitors and antenna clearance for reliable WiFi performance.
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

Riya Tiwari (verified owner) –
Perfect for my IoT project. This Espressif ESP8266 Serial Port WiFi Transceiver has excellent WiFi performance.
Bharat Arora (verified owner) –
Perfect for my IoT project. This Espressif ESP8266 Serial Port WiFi Transceiver has excellent WiFi performance.
Sameer Pandey (verified owner) –
Excellent for smart home projects. This Espressif ESP8266 Serial Port WiFi Transceiver connects reliably to my router.
Aanya Dhillon –
Excellent Espressif ESP8266 Serial Port WiFi Transceiver! WiFi connectivity is strong and stable. Perfect for IoT projects.
Manoj Naidu –
Love this Espressif ESP8266 Serial Port WiFi Transceiver. Built a smart switch with it. Works with Home Assistant perfectly.
Divyansh Modi (verified owner) –
Nice Espressif ESP8266 Serial Port WiFi Transceiver for IoT prototyping. Breadboard compatible which is a plus.
Jatin Tiwari (verified owner) –
This Espressif ESP8266 Serial Port WiFi Transceiver is a beast for the price. Running a web server on it with no issues.
Hemant Dave (verified owner) –
Excellent Espressif ESP8266 Serial Port WiFi Transceiver! WiFi connectivity is strong and stable. Perfect for IoT projects.
Ojas Nayak (verified owner) –
Good Espressif ESP8266 Serial Port WiFi Transceiver. WiFi works well. Sometimes needs a reset but overall solid.
Diya Rajan (verified owner) –
Superb Espressif ESP8266 Serial Port WiFi Transceiver! Using it for my weather monitoring station. WiFi range is impressive.
Karan Deshpande –
Great Espressif ESP8266 Serial Port WiFi Transceiver. OTA updates work perfectly. Using 5 of these around my house.
Sandeep Chopra (verified owner) –
Nice Espressif ESP8266 Serial Port WiFi Transceiver for IoT prototyping. Breadboard compatible which is a plus.
Mayank Batra (verified owner) –
Good quality Espressif ESP8266 Serial Port WiFi Transceiver. Flash memory is sufficient for most projects.
Divyansh Nayak (verified owner) –
Perfect for my IoT project. This Espressif ESP8266 Serial Port WiFi Transceiver has excellent WiFi performance.