ESP8266 ESP-01S 5V WiFi Relay Module for Smart Home Control
ESP8266 ESP-01S 5V WiFi Relay Module for Smart Home Control
ESP8266 ESP-01S 5V WiFi Relay Module – Smart Home Automation
Take control of your home automation projects with the ESP8266 ESP-01S 5V WiFi Relay Module. Designed around the powerful ESP-01S Wi-Fi microcontroller, this compact intelligent relay module lets you build your own smart switch and control connected devices remotely — right from your smartphone app or custom Arduino sketch.
Why Choose the ESP-01S WiFi Relay Module?
- ESP-01S Upgraded Design: Unlike the original ESP-01, the ESP-01S board includes a built-in 10K pull-up resistor, making it more stable and easier to integrate into your DIY smart home projects.
- Broad Voltage Compatibility: Supports 10A 250VAC, 10A 125VAC, 10A 30VDC, and 10A 28VDC — versatile enough for a wide range of household and low-voltage circuits.
- 5V Operation: Runs on a standard 5V supply; relay (5V or 3V) is included with the module.
- Wireless Control: Built-in ESP8266 Wi-Fi enables seamless wireless remote control without messy wiring or additional hardware.
- DIY & Maker Ready: Fully compatible with Arduino IDE and similar platforms — ideal for IoT enthusiasts, hobbyists, and smart home builders.
- Available in 4 Color Options: Choose the look that fits your setup.
Technical Specifications
- Module: ESP8266 ESP-01S
- Operating Voltage: 5V DC
- Relay Ratings: 10A 250VAC / 10A 125VAC / 10A 30VDC / 10A 28VDC
- Relay included: 5V or 3V (shipped with device)
- Pull-up Resistance: 10K (pre-installed on ESP-01S board)
- Connectivity: 802.11 b/g/n Wi-Fi
- Compatible: Arduino, ESP IDE, phone app control
Perfect For
- Smart home automation systems
- IoT (Internet of Things) DIY builds
- Remote-controlled switches and appliances
- Arduino and ESP8266 development projects
- Makers, hobbyists, and electronics enthusiasts
⚠ Important Note for Beginners: This module requires basic electronics knowledge. Damage caused by incorrect wiring or power supply is not covered under after-sales service. Please review the datasheet and wiring diagrams carefully before use.
For guidance on safe use of electrical components and home automation, visit the U.S. Consumer Product Safety Commission (CPSC) for product safety information, and OSHA's Electrical Safety page for best practices when working with electrical circuits.
Frequently Asked Questions
Q: What is the ESP8266 ESP-01S 5V WiFi Relay Module used for?
A: The ESP8266 ESP-01S 5V WiFi Relay Module is an intelligent switch module designed for smart home automation and IoT projects. It allows you to remotely control connected electrical devices via Wi-Fi using a smartphone app or Arduino-based code, making it ideal for DIY smart home builders and electronics enthusiasts.
Q: What is the difference between the ESP-01 and the ESP-01S?
A: The ESP-01S is an upgraded version of the original ESP-01. The key difference is that the ESP-01S board includes a built-in 10K pull-up resistor, which improves stability and simplifies wiring. All other core parameters and performance characteristics are essentially the same between the two versions.
Q: What relay voltages are supported, and is the relay included?
A: This module supports 10A 250VAC, 10A 125VAC, 10A 30VDC, and 10A 28VDC ratings. A relay (either 5V or 3V) is included with the module when shipped, so you have everything you need to get started with your smart switch project.
Q: Is this module compatible with Arduino?
A: Yes! The ESP8266 ESP-01S WiFi Relay Module is fully compatible with the Arduino IDE and other ESP8266-supported development environments. It can be programmed and integrated into a wide range of Arduino and IoT smart home projects.