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Modules & Actuators
Relay Module
Lets a 3.3/5 V signal switch mains-powered devices.
Definition
An electromechanical switch isolated from the microcontroller via an opto-coupler.
AI Application
Used by AI home-automation systems to safely turn lights, fans and pumps on or off.
Parts & pins
1
VCC
5V power input
2
GND
Ground reference
3
IN
Trigger signal from MCU
4
COM / NO / NC
High-voltage output terminals
5
Relay Coil
Electromechanical switch
6
Opto-Isolator
Protects MCU from coil noise
Works with
Hardware you can wire this part to in a typical project.
