ESP-01S WiFi module with ESP8266EX and 1 MB flash memory

Compact WiFi module with ESP8266EX and 1 MB flash memory

Article no: 3858

Information about this module is generated with the help of AI. The description may be incomplete, inaccurate, or subject to change.
ESP-01S is a compact WiFi module based on the ESP8266EX. The module is designed for embedded systems, IoT projects, remote control and other applications where wireless communication over 2.4 GHz WiFi is required.

The module operates from 3.0 to 3.6 V and has an integrated PCB antenna. The ESP8266EX contains a powerful microcontroller with integrated WiFi functionality and can be programmed to operate as a standalone controller or as a wireless communication interface for another microcontroller.

The flash memory on the module is a BOYAMICRO 25Q80ESTIG. This is an 8 Mbit SPI flash memory, corresponding to 1 MB of storage. It is used for program software and data required by the ESP8266.

ESP-01S has a compact size of only 14.3 x 24.8 x 3 mm. The module is therefore well suited for projects where space is limited. It can for example be used together with Arduino, AVR, STM32 and other microcontrollers communicating through a serial UART interface.

The ESP8266EX supports 2.4 GHz WiFi within the frequency range from 2400 to 2483.5 MHz. The module can be used for sensors, data collection, control systems, web servers and communication between electronic devices.

Facts.
Model: ESP-01S
Microcontroller: ESP8266EX
Flash memory: 1 MB
Flash chip: BOYAMICRO 25Q80ESTIG
Flash size: 8 Mbit
Flash interface: SPI
WiFi: 2.4 GHz
Frequency range: 2400 to 2483.5 MHz
Operating voltage: 3.0 to 3.6 V
Communication: UART
Antenna: Integrated PCB antenna
Size: 14.3 x 24.8 x 3 mm
Operating temperature: -40 C to 125 C
Microcontroller core: ESP8266
Module type: ESP8266 WiFi module

Included.
1 pc module.

About the product.
Weight: approx 6 gram.
Contact us if you have questions at info@pchbutik.se
Article no: 3858
Remaining stock quantity can be found under the Product details tab.
In our range since: 2026-11-16

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