RoboEssentials
1-Channel 5V Relay Module for Arduino, ESP32, Raspberry Pi & Home Automation
1-Channel 5V Relay Module for Arduino, ESP32, Raspberry Pi & Home Automation
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The 1-Channel 5V Relay Module is an easy-to-use switching module that allows low-voltage microcontrollers like Arduino and ESP32 to safely control higher-voltage AC and DC electrical devices. It is ideal for home automation, robotics, IoT, and industrial control projects.
Technical Specifications
| Specification | Details |
|---|---|
| Module Type | 1-Channel Relay Module |
| Relay Voltage | 5V DC |
| Number of Channels | 1 |
| Control Signal | Digital Input |
| Trigger Level | Low or High (depends on module variant) |
| Indicator LED | Yes |
| Isolation | Optocoupler (available on some versions) |
| Mounting Holes | Yes |
| PCB Material | FR4 |
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Key Features
Key Features
Single Channel Relay
5V Operating Voltage
Optocoupler Isolation (on supported variants)
LED Status Indicator
Easy Arduino Interface
Screw Terminal Connections
Supports AC & DC Loads
Transistor Driver Circuit
Compact PCB Design
Beginner Friendly
Applications
Applications
Home Automation
Smart Switches
Smart Lighting
Water Pump Control
Smart Irrigation
Security Systems
Door Lock Projects
Industrial Automation
Motor Control
IoT Projects
Smart Dustbin
Package Includes
Package Includes
1 × 1-Channel 5V Relay Module
Compatibility
Compatibility
Frequently Asked Questions
Frequently Asked Questions
Is it compatible with Arduino Uno?
Yes.
Can it work with ESP32?
Yes.
Some ESP32 projects may require checking the module's trigger logic (HIGH or LOW trigger).
Can I control AC appliances?
Yes, within the relay's rated voltage and current limits, and only with proper wiring and electrical safety precautions.
Can it control DC motors?
Yes.
Is it optocoupler isolated?
Some variants are.
Please verify the exact module version before publishing.
What is the difference between NO and NC?
NO (Normally Open): Circuit is open until the relay is activated.
NC (Normally Closed): Circuit is closed until the relay is activated.
Does it include terminal screws?
Most versions do.
Is it suitable for beginners?
Yes.
It is one of the easiest relay modules to interface with Arduino and ESP32.
