5v 2 Channel Usb Relay Card

5V 2 Channel Relay Board - Compatible with Development Boards - Arduino Raspberry Pi etc.

5V 2 Channel Relay CardIt can work with 2 channels at 5V voltage, has usb input, Arduino, Raspberry Pi etc. Can be used with development cards.

What is Relay?

Relay is an electromagnetic circuit element that works when current flows through it. Relays are used to switch a high power receiver with a small value current. Relays can have more than one switch contact in a single element, so they can turn on and off more than one load at the same time.

Relay Usage

• The simple drawing below shows the lamp control of the relay triggered by a transistor. In short, the coil of the relay is energized by the triggering of the transistor. Thus, the coil gains electromagnet property, pulls the switch pallet towards itself and switches the relay to transmission.

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