---
product_id: 28008875
title: "Ecoolbuy 12V 1-Channel Relay Module w/ Optocoupler H/L Level Trigger for Arduino 5mA"
brand: "ecoolbuy"
price: "148 kr"
currency: DKK
in_stock: true
url: https://www.desertcart.dk/products/28008875-ecoolbuy-12v-1-channel-relay-module-w-optocoupler-h-l
store_origin: DK
region: Denmark
---

# Ecoolbuy 12V 1-Channel Relay Module w/ Optocoupler H/L Level Trigger for Arduino 5mA

**Brand:** ecoolbuy
**Price:** 148 kr
**Availability:** ✅ In Stock

## Quick Answers

- **What is this?** Ecoolbuy 12V 1-Channel Relay Module w/ Optocoupler H/L Level Trigger for Arduino 5mA by ecoolbuy
- **How much does it cost?** 148 kr with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.dk](https://www.desertcart.dk/products/28008875-ecoolbuy-12v-1-channel-relay-module-w-optocoupler-h-l)

## Best For

- ecoolbuy enthusiasts

## Why This Product

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

## Description

Module 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: 50mm*26mm*18.5mm (L*W*H) 
 
Module interface: 
1. DC+: positive power supply (VCC) 
2. DC-: negative power supply (GND) 
3. IN: can be high or low level control relay 
 
Relay outputs: 
1. NO: normally open relay interface 
2. COM: Common Interface Relays 
3. NC: 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

## Features

- the 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; 3. the modu
- the module Operating voltage 12V;
- the 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

![Ecoolbuy 12V 1-Channel Relay Module w/ Optocoupler H/L Level Trigger for Arduino 5mA - Image 1](http://ecx.images-amazon.com/images/I/51F4QRSlgkL.jpg)
![Ecoolbuy 12V 1-Channel Relay Module w/ Optocoupler H/L Level Trigger for Arduino 5mA - Image 2](http://ecx.images-amazon.com/images/I/41JhuhGmlfL.jpg)
![Ecoolbuy 12V 1-Channel Relay Module w/ Optocoupler H/L Level Trigger for Arduino 5mA - Image 3](http://ecx.images-amazon.com/images/I/41wzoHx3-IL.jpg)
![Ecoolbuy 12V 1-Channel Relay Module w/ Optocoupler H/L Level Trigger for Arduino 5mA - Image 4](http://ecx.images-amazon.com/images/I/41O8XNcEtpL.jpg)
![Ecoolbuy 12V 1-Channel Relay Module w/ Optocoupler H/L Level Trigger for Arduino 5mA - Image 5](http://ecx.images-amazon.com/images/I/415-vfsDk7L.jpg)

---

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**Shop now:** [https://www.desertcart.dk/products/28008875-ecoolbuy-12v-1-channel-relay-module-w-optocoupler-h-l](https://www.desertcart.dk/products/28008875-ecoolbuy-12v-1-channel-relay-module-w-optocoupler-h-l)

---

*Product available on Desertcart Denmark*
*Store origin: DK*
*Last updated: 2026-03-13*