---
product_id: 58422919
title: "2-Channel 5V Relay Module High Low Level Triggering Optocoupler Isolation Load 30A DC 30V AC 250V for PLC Automation Control, Industrial System Control"
brand: "knacro"
price: "R390"
currency: ZAR
in_stock: true
reviews_count: 5
url: https://www.desertcart.co.za/products/58422919-2-channel-5v-relay-module-high-low-level-triggering-optocoupler
store_origin: ZA
region: South Africa
---

# 2-Channel 5V Relay Module High Low Level Triggering Optocoupler Isolation Load 30A DC 30V AC 250V for PLC Automation Control, Industrial System Control

**Brand:** knacro
**Price:** R390
**Availability:** ✅ In Stock

## Quick Answers

- **What is this?** 2-Channel 5V Relay Module High Low Level Triggering Optocoupler Isolation Load 30A DC 30V AC 250V for PLC Automation Control, Industrial System Control by knacro
- **How much does it cost?** R390 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.za](https://www.desertcart.co.za/products/58422919-2-channel-5v-relay-module-high-low-level-triggering-optocoupler)

## Best For

- knacro enthusiasts

## Why This Product

- Trusted knacro brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Description

2-Channel 5V Relay Module High Low Level Triggering Optocoupler Isolation Load 30A DC 30V AC 250V for PLC Automation Control, Industrial System Control

## Features

- Using high-power relay, the maximum control load DC 30V 30A / AC 250V 30A;
- With each optocoupler isolation, anti-interference ability.
- In line with international safety standards, the control area and the load area with isolation slot.
- Each channle has a relay on LED indication.
- Product Applications: PLC automation equipment control, industrial system control, logistics network control, home intelligent product control, electronic enthusiasts to develop experiments, all kinds of circuit modification.

## Images

![2-Channel 5V Relay Module High Low Level Triggering Optocoupler Isolation Load 30A DC 30V AC 250V for PLC Automation Control, Industrial System Control - Image 1](https://images-na.ssl-images-amazon.com/images/I/81KeTXpxNIL.jpg)
![2-Channel 5V Relay Module High Low Level Triggering Optocoupler Isolation Load 30A DC 30V AC 250V for PLC Automation Control, Industrial System Control - Image 2](https://images-na.ssl-images-amazon.com/images/I/81veBT6UUgL.jpg)
![2-Channel 5V Relay Module High Low Level Triggering Optocoupler Isolation Load 30A DC 30V AC 250V for PLC Automation Control, Industrial System Control - Image 3](https://images-na.ssl-images-amazon.com/images/I/812aKl9vt0L.jpg)
![2-Channel 5V Relay Module High Low Level Triggering Optocoupler Isolation Load 30A DC 30V AC 250V for PLC Automation Control, Industrial System Control - Image 4](https://images-na.ssl-images-amazon.com/images/I/81HNSZOBkOL.jpg)
![2-Channel 5V Relay Module High Low Level Triggering Optocoupler Isolation Load 30A DC 30V AC 250V for PLC Automation Control, Industrial System Control - Image 5](https://images-na.ssl-images-amazon.com/images/I/814NXvkHnyL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ 







  
  
    Robust relays for commercial applications
  

*by M***S on Reviewed in the United States on July 1, 2020*

The package came and I wired it up to the Arduino and power and it works flawlessly. I amended the times to heat the desiccate and now it dries the desiccate perfectly it also controls the solenoid which selects the column. I had a 5VDC charger at 2000 mA so both the arduino and the relay board were powered from the one 5V charger and it really cleaned up the installation. I bought a second relay as a spare but there is a good chance I will not need it for a long time. This relay boards are pretty quiet which is a bonus.

### ⭐⭐⭐⭐⭐ 







  
  
    Fits the requirements
  

*by J***I on Reviewed in the United States on April 26, 2018*

Used with Arduino.  Arduino 5v pin was insufficient current to drive the relays.  I needed to provide a separate 5v supply.  Once I understood this requirement, the relays have worked well.  Able to connect 12Gauge wire to the high voltage terminals, as the terminals are sized large enough to accept this gauge.

### ⭐⭐⭐⭐⭐ 







  
  
    Perfect
  

*by G***Z on Reviewed in the United States on April 12, 2019*

It fits perfectly for my project (automatic control for an electric water heater).  The hardware looks good quality and it works well. A point to note is that you have to connect your arduino to an external power source.

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**Shop now:** [https://www.desertcart.co.za/products/58422919-2-channel-5v-relay-module-high-low-level-triggering-optocoupler](https://www.desertcart.co.za/products/58422919-2-channel-5v-relay-module-high-low-level-triggering-optocoupler)

---

*Product available on Desertcart South Africa*
*Store origin: ZA*
*Last updated: 2026-03-11*