SainSmart Relay Module
Best reliable switching solution for home automation hobbyists.
This is the essential bridge for anyone looking to make their microcontroller actually move things in the real world. It sacrifices a bit of board space for the peace of mind that comes with opto-isolation, ensuring your delicate logic circuits stay safe while you wrangle high-voltage motors and lights.
$11.99
Who it's for
- DIY hobbyists building smart home systems or automated prototypes
- Beginners looking for a straightforward way to control high-power devices
- Makers prioritizing the safety and longevity of their microcontroller boards
Who should skip it
- Industrial users requiring heavy-duty switching for continuous high-amperage equipment
- Novices who prefer comprehensive, step-by-step official guides and manuals
- Safety-conscious builders working with mains electricity in accessible environments
Performance breakdown
Circuit Isolation
Opto-isolated inputs provide robust protection for sensitive microcontroller logic.
Platform Compatibility
Seamless integration with Arduino, AVR, and PIC platforms right out-of-the-box.
Switching Capacity
Handles high-voltage loads effectively for most home automation and robotics tasks.
Visual Feedback
Onboard LEDs make troubleshooting and status monitoring intuitive and immediate.
Build Quality
Reliable construction suitable for prototyping and hobbyist-grade electronics projects.
Ease of Integration
Compact footprint simplifies wiring and mounting in tight project enclosures.
Key Specs
Voltage Rating
5V
Channel Count
4
Driver Current
15-20mA per channel
Relay Rating
AC 250V 10A, DC 30V 10A
Compatibility
Arduino, 8051, AVR, PIC, DSP, ARM, MSP430
Features
Opto-isolated inputs, Indication LEDs
Know before you buy
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