ESP-01/ESP-01S 8266 Serial to WIFI Module Industrial Low Power Wireless Module Zpaxo ESP8285-01S

ESP-01 ESP-01S ESP8266 Serial WiFi Module – Low Power IoT

ESP8285-01S
$3.35
$3.35 $4.14
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ESP-01/ESP-01S 8266 Serial to WIFI Module Industrial Low Power Wireless Module Zpaxo ESP8285-01S
  • ESP-01/ESP-01S 8266 Serial to WIFI Module Industrial Low Power Wireless Module Zpaxo ESP8285-01S
  • ESP-01/ESP-01S 8266 Serial to WIFI Module Industrial Low Power Wireless Module Zpaxo
  • ESP-01/ESP-01S 8266 Serial to WIFI Module Industrial Low Power Wireless Module Zpaxo
  • ESP-01/ESP-01S 8266 Serial to WIFI Module Industrial Low Power Wireless Module Zpaxo
  • ESP-01/ESP-01S 8266 Serial to WIFI Module Industrial Low Power Wireless Module Zpaxo
  • ESP-01/ESP-01S 8266 Serial to WIFI Module Industrial Low Power Wireless Module Zpaxo ESP8285-01S
  • ESP-01/ESP-01S 8266 Serial to WIFI Module Industrial Low Power Wireless Module Zpaxo
  • ESP-01/ESP-01S 8266 Serial to WIFI Module Industrial Low Power Wireless Module Zpaxo
  • ESP-01/ESP-01S 8266 Serial to WIFI Module Industrial Low Power Wireless Module Zpaxo
  • ESP-01/ESP-01S 8266 Serial to WIFI Module Industrial Low Power Wireless Module Zpaxo
ESP-01 ESP-01S ESP8266 Serial WiFi Module – Low Power IoT

ESP-01 ESP-01S ESP8266 Serial WiFi Module – Low Power IoT

$3.35
$3.35 $4.14
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ESP-01 / ESP-01S ESP8266 Serial WiFi Module

Add reliable wireless connectivity to your electronics projects with the ESP-01 / ESP-01S ESP8266 Serial WiFi Module. Compact, energy-efficient, and industrial-grade, this tiny board punches well above its weight — making it a go-to choice for hobbyists, engineers, and makers who need dependable WiFi capability in a minimal footprint.

Key Features

  • ESP8266 Chipset: Industry-standard WiFi SoC with onboard TCP/IP stack for seamless network integration.
  • Ultra-Low Power Consumption: Optimized for battery-powered and always-on IoT applications — keeps energy draw to a minimum without sacrificing performance.
  • Serial (UART) Interface: Simple TX/RX communication makes it easy to interface with Arduino, Raspberry Pi, STM32, and other microcontrollers.
  • Two Versions Available: ESP-01 (1MB flash) and ESP-01S (1MB flash with improved PCB antenna and power-LED disabled for lower current draw).
  • Industrial Reliability: Designed for stable operation in demanding environments — suitable for smart home automation, industrial sensing, remote monitoring, and more.
  • Onboard Antenna: Integrated PCB antenna delivers solid wireless range without additional hardware.
  • AT Command Support: Pre-flashed with Espressif AT firmware — start communicating over WiFi immediately without writing a single line of custom firmware.
  • Reprogrammable: Flash with NodeMCU, MicroPython, or custom Arduino sketches via the ESP8266 Arduino core for full standalone operation.

Specifications

  • Chipset: Espressif ESP8266EX
  • Operating Voltage: 3.3V
  • WiFi Standard: 802.11 b/g/n
  • Frequency Range: 2.4 GHz
  • Flash Memory: 1MB (ESP-01 / ESP-01S)
  • GPIO Pins: 2 x GPIO
  • Interface: UART (Serial)
  • Dimensions: ~14.3 x 24.8 mm

What Can You Build With It?

The ESP8266 module is one of the most versatile wireless components available. Use it to build:

  • Smart home automation devices (control lights, fans, sensors via WiFi)
  • IoT data loggers and remote sensor nodes
  • Web servers and web-based control panels hosted on the chip itself
  • Wireless serial bridges between devices
  • MQTT-enabled home assistant integrations

Works Great With

Pair this module with other components from our store to complete your DIY electronics projects:

Learn more: EPA guidance on lithium-ion battery handling

Frequently Asked Questions

Q: What is the difference between the ESP-01 and ESP-01S WiFi modules?

A: Both the ESP-01 and ESP-01S are based on the ESP8266 chipset with 1MB of flash memory. The ESP-01S features an improved PCB design with the power LED disabled by default, resulting in lower current consumption — making it better suited for battery-powered applications. The ESP-01S also has a slightly more refined antenna layout for improved signal stability.

Q: What microcontrollers are compatible with the ESP8266 Serial WiFi Module?

A: The ESP-01/ESP-01S communicates via UART (Serial TX/RX) at 3.3V logic levels, making it compatible with Arduino (with a voltage divider on TX), Raspberry Pi, STM32, ESP32, and virtually any microcontroller with a serial interface. Note: always use a 3.3V supply — do NOT power directly from 5V.

Q: Does the ESP8266 module come pre-flashed and ready to use?

A: Yes. The module ships pre-loaded with Espressif AT command firmware, so you can begin sending WiFi commands immediately via a serial terminal or microcontroller. It can also be re-flashed with NodeMCU, MicroPython, or custom Arduino firmware for standalone operation without an external controller.

Q: What WiFi standards and frequencies does this module support?

A: The ESP8266 module supports IEEE 802.11 b/g/n on the 2.4 GHz band. It supports both Station mode (connect to an existing network) and Access Point mode (create its own WiFi hotspot), as well as a combined Station+AP mode.

Production & Packaging Notice

To maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.

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