ESP-01S ESP8266 WiFi Module

ESP-01S ESP8266 WiFi Module The ESP-01S ESP8266 WiFi Module is a compact and low-cost WiFi development module based on the ESP8266EX chip. It provides reliable 2.4GHz wireless connectivity for Arduino, IoT, home automation, smart devices, and wireless control applications. The ESP-01S is an upgraded version of the ESP-01, featuring 1MB Flash memory, improved PCB design, and built-in pull-up resistors for enhanced stability. It can be programmed using the Arduino IDE, ESP8266 SDK, MicroPython, or AT commands. Specifications Model: ESP-01S Chipset: ESP8266EX Processor: 32-bit Tensilica L106 CPU Frequency: 80MHz (Default), up to 160MHz Operating Voltage: 3.3V DC WiFi Standard: IEEE 802.11 b/g/n (2.4GHz) Flash Memory: 1MB GPIO Pins: 2 General Purpose I/O (GPIO0 & GPIO2) Communication Interfaces: UART, SPI, SDIO Antenna: On-board PCB Antenna Wireless Modes: Station (STA), Access Point (AP), STA + AP Security: WEP, WPA/WPA2 Logic Level: 3.3V (Not 5V tolerant) Dimensions: Approx. 24.8 × 14.3 × 3 mm Features Built-in WiFi for IoT applications Compact and lightweight design Upgraded 1MB Flash memory Compatible with Arduino IDE and ESP8266 SDK Supports AT Commands, MicroPython, and custom firmware Low power consumption On-board PCB antenna for stable wireless communication Built-in pull-up resistors for improved boot stability Ideal for wireless serial communication and remote monitoring Applications IoT (Internet of Things) projects Smart home automation Wireless sensor networks Remote monitoring and control WiFi-enabled Arduino projects Industrial automation Data logging systems Wireless communication devices Note: The ESP-01S operates on 3.3V only and is not 5V tolerant. Ensure your power supply can provide up to 300mA peak current during WiFi transmission for reliable operation.