---
product_id: 566202223
title: "ESP8266 ESP-01S WiFi Wireless Serial Transceiver Module 4MB Flash 3.3V Wi-Fi Module Compatible with Ar-duino IDE (2)"
brand: "wishiot"
price: "B/.55"
currency: PAB
in_stock: true
reviews_count: 2
url: https://www.desertcart.com.pa/products/566202223-esp8266-esp-01s-wifi-wireless-serial-transceiver-module-4mb-flash
store_origin: PA
region: Panama
---

# 3.3V Power 4MB Flash Wi-Fi Enabled ESP8266 ESP-01S WiFi Wireless Serial Transceiver Module 4MB Flash 3.3V Wi-Fi Module Compatible with Ar-duino IDE (2)

**Brand:** wishiot
**Price:** B/.55
**Availability:** ✅ In Stock

## Summary

> 🚀 Elevate Your Projects with Wishiot's WiFi Wizardry!

## Quick Answers

- **What is this?** ESP8266 ESP-01S WiFi Wireless Serial Transceiver Module 4MB Flash 3.3V Wi-Fi Module Compatible with Ar-duino IDE (2) by wishiot
- **How much does it cost?** B/.55 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.pa](https://www.desertcart.com.pa/products/566202223-esp8266-esp-01s-wifi-wireless-serial-transceiver-module-4mb-flash)

## Best For

- wishiot enthusiasts

## Why This Product

- Trusted wishiot brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Pack of 5:** Get more value with five modules to fuel your tech ambitions!
- • **Easy Integration:** Compatible with Arduino IDE for effortless programming!
- • **Powerful Performance:** Experience enhanced signal strength with the upgraded antenna!
- • **Massive Memory Upgrade:** Store more with 4MB flash memory for your innovative applications!
- • **Unleash Your Creativity:** Transform your projects with seamless Wi-Fi connectivity!

## Overview

The Wishiot ESP8266 ESP-01S WiFi Wireless Serial Transceiver Module is a powerful 4MB flash Wi-Fi module designed for seamless integration with Arduino IDE. With enhanced antenna performance and a compact design, this module is perfect for tech enthusiasts looking to elevate their IoT projects. Each purchase includes five modules, ensuring you have plenty of resources to innovate and create.

## Description

WishiotESP8266 ESP-01S WiFi Wireless Serial Transceiver Module 4MB Flash 3.3V Wi-Fi Module Compatible with Ar-duino IDE (2)

## Features

- 1, The ESP-01S WiFi module is based on ESP8266 chip, so ESP-01S has all the functions and performance of ESP8266
- 2, Compared with ESP-01, ESP-01S has stronger antenna signal, and its pcb layout changed for an improvement in WiFi radio performance
- 3, Flash memory upgraded from 512KB to 4MB, flash chip XMC 0H32BHIG, XM25QH32CJIG or XM25QH32CHIGU10Q shipped by random
- 4, The ESP-01S is with 2X4 Pin header, and you can plug it to the interface of Burner to download the firmware to ESP-01S/ESP01S. It isalso compatible with Ar-duino IDE, please choose "Generic ESP8285 Module" board in IDE
- 5, What you will get is 5pcs ESP-01S Wifi Serial Transceiver Module 4MB(pls note it supports 3.3V only). If you have any question, pls feel free to contact us by clicking "WISHIOT" under the shopping cart and clicking " Ask a question"

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Brand | Wishiot |
| Product Dimensions | 3 x 2 x 1 cm; 20 g |
| Manufacturer | Wishiot |
| Color | 2 |
| Are Batteries Included | No |
| Item Weight | 20 g |

## Images

![ESP8266 ESP-01S WiFi Wireless Serial Transceiver Module 4MB Flash 3.3V Wi-Fi Module Compatible with Ar-duino IDE (2) - Image 1](https://m.media-amazon.com/images/I/61V0+WbS3CL.jpg)

## Available Options

This product comes in different **Color** options.

## Customer Reviews

### ⭐⭐⭐⭐ 







  
  
    Slow
  

*by A***R on Reviewed in the United States on 17 February 2023*

Nice module but data rate is extremely slow.

### ⭐ 







  
  
    Did not work with Prusa Mini
  

*by D***N on Reviewed in the United States on 7 September 2023*

While this installed and was detected, it did not stay connected long enough to ping the IP.

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**Shop now:** [https://www.desertcart.com.pa/products/566202223-esp8266-esp-01s-wifi-wireless-serial-transceiver-module-4mb-flash](https://www.desertcart.com.pa/products/566202223-esp8266-esp-01s-wifi-wireless-serial-transceiver-module-4mb-flash)

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*Product available on Desertcart Panama*
*Store origin: PA*
*Last updated: 2026-02-23*