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2 Channel 5V Relay Module SPDT

84.00

Category:

The 2-Channel Relay Module SPDT (Single Pole Double Throw) featured here is designed to control devices with higher voltages, exceeding the handling capacity of typical microcontrollers such as Arduino or Raspberry Pi. This relay module, with two channels, is capable of managing household appliances with a power rating of up to 10A.

Note: The PCB color or layout might exhibit slight variations.

Understanding Relays:
A relay functions as an electrically operated switch. While many relays use an electromagnet to mechanically operate a switch, other operating principles, such as solid-state relays, are also employed. Relays prove useful in scenarios where it’s necessary to control a circuit using a separate low-power signal or when one signal must control multiple circuits.

Relays operate based on electromagnetism. When the relay coil is energized, it acts like a magnet and alters the position of a switch. Importantly, the circuit powering the coil is entirely isolated from the section responsible for switching ON/OFF. This isolation provides electrical separation. Consequently, it becomes possible to control a relay using a 5V signal from an Arduino while having the other end manage a 220 to 240V appliance. The higher voltage end is entirely isolated from the 5V Arduino circuitry.

Above: An illustration of how to connect the COM and NO connectors on a relay to power and lights.

Details

28VDC 10A and 250VAC 10A
LED indicator lights
5 volts for the control voltage

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