5v 12v 1 2 4 8 channel relay module with optocoupler. Relay Output 1 2 4 8 way relay module for arduino


Relays are switches that open and close circuits electromechanically or electronically. Relays control one electrical circuit by opening and closing contacts in another circuit.

Circuits that operate at high voltages or at high currents cannot be controlled directly by an Arduino. Instead, you use a low-voltage control signal from the Arduino to control a relay, which is capable of handling and switching high-voltage or high-power circuits. A relay consists of an electromagnet that, when energized, causes a switch to close or open. Relays provide complete electrical isolation between the control circuit and the circuit being controlled.


12V 1 channel relay12V 2 channel relay12V 4 channel relay12V 8 channel relay5V 1 channel relay5V 2 channel relay5V 4 channel relay5V 8 channel relay
SKU: 32649659086 Categories: ,
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