5V 8 Channel Relay Module

(Including GST)

5V 8 Channel Relay Module with Optocoupler meets the safety standard as control areas and load areas have the isolation groove. Optical coupling isolation module. The triggering of 8 Channel Relay Module is reliable, more stable. The double FR4 circuit board
design, high-end SMT process. It has power and relay operation instructions. Relays terminals (C, NC, NO) are accessible through screw terminals which makes wiring up the board very easy. The inputs of the 8 Channel 5V Relay Module are isolated to protect any delicate control circuitry.

Application: 5V 8 Channel Relay Module

To Control solenoids
Motors
Bulbs and bulbs
Lamps
Smart home control

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SKU: A145311 Category: Relay Boards

Description

5V 8-Channel Relay Module – This is an 8-channel relay board that operates on 5V. It can be used directly to control 240V power appliances from most of the microcontrollers and other control system circuits. Perfect for switching 240V appliances like lights, fans, etc.

The board has a high-quality relay, which can handle a maximum of 10A @ 250V or 15A @ 125V AC. Each Relay has three connections – Common – C, Normally Open-NO, and Normally Closed-NC brought out to 3 pin screw terminals which makes it easy to make and remove connections. The board has a power indication and a relay status LED to ease debugging. Power input and relay control signals are brought to header pins on the board.

A wide range of microcontrollers such as Arduino, AVR, PIC, ARM, and so on can control it. The use of such high-voltage relay eliminates the risk of heating up of the relay as electromechanical relays limit the current consumption in accordance with a voltage rating.

Note: On the high-level and low-level-triggered mode, friends who do not understand, have a look

A high-level trigger refers to the signal voltage between input and trigger, can be understood as a signal input with VCC cathode short-circuit triggered away;
Low-level trigger refers to the signal voltage between the input terminal and Earth OV trigger, can be understood as the signal input terminal and the GND negative electrode short circuit triggered away 1-channel relay module connection.

Features: 5V 8 Channel Relay Module

It can control both AC and DC appliances such as Solenoids, Motors, lights, fans, etc.
High-quality screw terminals (Terminal Block) provided (C, NC, NO) for quick and easy
connection
Freewheeling diode to protect your microcontroller
Input Signal Pin connected to Burg stick for easy accessibility
LED Status indicators to indicate the relay ON/OFF status
Mounting holes provided
Signal input with a low-level signal, the common and often start conduction
The relay can directly control all kinds of equipment and load

Specifications: 5V 8 Channel Relay Module

Channel – 8
Operating Voltage (VDC) – 5
Trigger Voltage (VDC) – 5
Switching Voltage (VAC) – 250@10A
Switching Voltage (VDC) – 30@10A
PCB hole diameter (mm) – 3.1
Dimensions (Length* Width *Height ) – 140*57*18 m

Pin Description: 5V 8 Channel Relay Module

C=common: This is the common terminal. This terminal will be connected to either of the other 2 terminals (NO or NC) based on the state of the relay.
NO=normally open: As the name indicates this is a normally open terminal, i.e. if the relay is not energized (not ON), this pin will be open. We can say that the switch is OFF by default and when the relay is energized it will become ON.
NC=normally close: As the name indicates it is normally closed terminal, i.e. if the relay is not energized (not ON), this pin will be closed. We can say that the switch is ON by default and when the relay is energized it will become OFF.

How to Work on 5V 8 Channel Relay Module

The eight-channel can be used to switch multiple loads at the same time since there are eight relays on the same module. This is useful in creating a central hub from where multiple remote loads can be powered, which is useful for tasks like home automation where the module can be placed in the main switchboard and can be connected to loads in other parts of the house and can be controlled from a central location using a microcontroller.

Relay Module 5V 8 Channel

In this diagram, eight separate loads (represented by lightbulbs) have been connected to the NO terminals of the relay. The live wire has been connected to the common terminal of each relay. When the relays are activated, the load is connected to the live wire and is powered. This setup can be reversed by connecting the load to the NC terminal, which will keep it powered on till the
relay is activated.

Eight-Channel Relay Module Basic Troubleshooting:

If either of the relays does not turn on:
1. The contacts might be welded due to overcurrent/arcing. Shaking the module firmly might help unstick the contacts.
2. The driver circuitry might have been damaged due to overvoltage.
3. Input polarity might be incorrect.
4. Jumper might not have been moved to the correct position