---
product_id: 43399657
title: "KNACRO 4-Channel Relay Module DC 12V with Optocoupler Isolation H/L high/Low Level Triger for Arduino"
brand: "xiny"
price: "B/.17"
currency: PAB
in_stock: true
category: "Electronics"
url: https://www.desertcart.com.pa/products/43399657-knacro-4-channel-relay-module-dc-12v-with-optocoupler-isolation
store_origin: PA
region: Panama
---

# KNACRO 4-Channel Relay Module DC 12V with Optocoupler Isolation H/L high/Low Level Triger for Arduino

**Brand:** xiny
**Price:** B/.17
**Availability:** ✅ In Stock

## Quick Answers

- **What is this?** KNACRO 4-Channel Relay Module DC 12V with Optocoupler Isolation H/L high/Low Level Triger for Arduino by xiny
- **How much does it cost?** B/.17 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.pa](https://www.desertcart.com.pa/products/43399657-knacro-4-channel-relay-module-dc-12v-with-optocoupler-isolation)

## Best For

- xiny enthusiasts

## Why This Product

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

## Description

1. the module uses genuine quality relay, normally open interfaces Maximum load: AC 250V/10A, DC 30V/10A;  2. using SMD optocoupler isolation, driving ability, stable performance; trigger current 5mA;  3. the module Operating voltage 12V;  4. the module can be high or low by a jumper setting trigger;  5. fault-tolerant design, even if the control line is broken, the relay will not operate;  6. the power indicator (green), the relay status indicator (red)  7. the interface design of human nature, all interfaces are available through a direct connection terminal leads, very convenient  8. module size: 73mm*50mm*17mm (L*W*H)  Module interface:  1. DC+: positive power supply (VCC)  2. DC-: negative power supply (GND)  3. IN1,IN2,IN3,IN4: can be high or low level control relay  S1,S2,S3,S4, HIGHT OR LOW LEVER  Relay outputs:  1. NO1,2,3,4: normally open relay interface  2. COM1,2,3,4: Common Interface Relays  3. NC1,2,3,4: normally closed relay interface  High and low level trigger options:  It is low level trigger when jumper connect to LOW pin  It is high level trigger when jumper connect to HIGH pin   Package:  1*12V 4CH relay module

## Features

- This module Operating voltage 12V
- This module uses genuine quality relay, normally open interfaces Maximum load: AC 250V/10A, DC 30V/10A
- Using SMD optocoupler isolation, driving ability, stable performance; trigger current 5mA
- This module can be high or low by a jumper setting trigger
- Fault-tolerant design, even if the control line is broken, the relay will not operate

## Images

![KNACRO 4-Channel Relay Module DC 12V with Optocoupler Isolation H/L high/Low Level Triger for Arduino - Image 1](https://images-na.ssl-images-amazon.com/images/I/41tTLmgP7zL.jpg)
![KNACRO 4-Channel Relay Module DC 12V with Optocoupler Isolation H/L high/Low Level Triger for Arduino - Image 2](https://images-na.ssl-images-amazon.com/images/I/41-kErMzYlL.jpg)
![KNACRO 4-Channel Relay Module DC 12V with Optocoupler Isolation H/L high/Low Level Triger for Arduino - Image 3](https://images-na.ssl-images-amazon.com/images/I/41sJA-ffGWL.jpg)
![KNACRO 4-Channel Relay Module DC 12V with Optocoupler Isolation H/L high/Low Level Triger for Arduino - Image 4](https://images-na.ssl-images-amazon.com/images/I/41h6P96FeXL.jpg)
![KNACRO 4-Channel Relay Module DC 12V with Optocoupler Isolation H/L high/Low Level Triger for Arduino - Image 5](https://images-na.ssl-images-amazon.com/images/I/41opiFQxG9L.jpg)

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*Product available on Desertcart Panama*
*Store origin: PA*
*Last updated: 2026-02-21*