What is a 4 channel relay?

What is a 4 channel relay?

The 4 Channel Relay Module is a convenient board which can be used to control high voltage, high current load such as motor, solenoid valves, lamps and AC load. It is designed to interface with microcontroller such as Arduino, PIC and etc. It also comes with a LED to indicate the status of relay.

What is mechanical relay?

Mechanical relays are devices that can turn on or turn off the power supplied to another device, like a switch. However, instead of having a person flip the switch, mechanical relays switch when provided with a small amount of power. This allows high-power circuits to be controlled by low-power devices.

How does a 4 relay module work?

The four-channel relay module contains four 5V relays and the associated switching and isolating components, which makes interfacing with a microcontroller or sensor easy with minimum components and connections. There are two terminal blocks with six terminals each, and each block is shared by two relays.

How do you hook up a 4 channel relay?

Control 4-Channel Relay Module

1. Bill of materials. Arduino board with USB cable (we use Arduino Uno)
2. Connect wires on relay module. Connect six female pins of wires with relay module male pins as shown on the picture.
3. Connect wires with Arduino.
4. Open Arduino IDE and write code.
5. Upload code to Arduino.

How do I connect 4 relay modules to Arduino?

Start by finding the “5V” pin on the Arduino and running a jumper wire over to the “VCC” pin on the breakout board. The VCC is the positive (power) input for the circuit. Next, run a wire from the “GND” (ground) pin on the Arduino to the “GND” pin on the Breakout Board. The breakout board now has power!

Is relay a mechanical switch?

A relay is an electrically operated switch. It consists of a set of input terminals for a single or multiple control signals, and a set of operating contact terminals. The switch may have any number of contacts in multiple contact forms, such as make contacts, break contacts, or combinations thereof.

How do you check 4 channel relay is working or not?

How to test a relay

1. Keep the multimeter in the continuity check mode.
2. Check for continuity between the N/C contacts and pole.
3. Check for discontinuity between N/O contacts and the pole.
4. Now energise the relay using the rated voltage.
5. Now check for continuity between N/O contacts and pole.