---
product_id: 256334306
title: "2pcs DC 12V 2 Channel Relay Module with Isolated Optocoupler High and Low Level H/L Level Trigger Module Triggered by DC 12V"
brand: "hiletgo"
price: "฿743"
currency: THB
in_stock: true
reviews_count: 5
category: "Hi Letgo"
url: https://www.desertcart.co.th/products/256334306-2pcs-dc-12v-2-channel-relay-module-with-isolated-optocoupler
store_origin: TH
region: Thailand
---

# 12V DC coil voltage 2-channel dual relay control Optocoupler isolation for stable, safe switching 2pcs DC 12V 2 Channel Relay Module with Isolated Optocoupler High and Low Level H/L Level Trigger Module Triggered by DC 12V

**Brand:** hiletgo
**Price:** ฿743
**Availability:** ✅ In Stock

## Summary

> 🔌 Power your projects with precision and protection!

## Quick Answers

- **What is this?** 2pcs DC 12V 2 Channel Relay Module with Isolated Optocoupler High and Low Level H/L Level Trigger Module Triggered by DC 12V by hiletgo
- **How much does it cost?** ฿743 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.th](https://www.desertcart.co.th/products/256334306-2pcs-dc-12v-2-channel-relay-module-with-isolated-optocoupler)

## Best For

- hiletgo enthusiasts

## Why This Product

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

## Key Features

- • **Fail-Safe Design:** Fault-tolerant circuitry prevents accidental relay activation even if control lines break.
- • **Robust 10A Switching:** Handles up to 250V AC or 30V DC at 10 amps—built for serious loads.
- • **Dual-Channel Powerhouse:** Control two circuits independently with high/low trigger flexibility.
- • **User-Friendly Interface:** Screw terminal connectors and jumper settings make installation and customization a breeze.
- • **Optical Isolation Safety:** Patch optical isolation ensures stable performance and protects your control board.

## Overview

This 2pcs DC 12V 2 Channel Relay Module features isolated optocouplers for stable, noise-free switching, supports both high and low level triggers via jumper settings, and can handle up to 10A at 250V AC or 30V DC. Designed with user-friendly screw terminals and a fail-safe design, it’s perfect for professional-grade DIY electronics and automation projects.

## Description

Description : 1. The module uses genuine quality relay , normally open interfaces Maximum load : AC 250V/10A, DC 30V/10A; 2. The power indicator (green) , relay status indicator (red) 3. Module size : 50mm * 26mm * 18.5mm (L * W * H) 4. Has four mounting bolts holes , hole 3.1mm, 44.5mm * 20.5mm pitch Module Interface: 1. DC +: positive power supply DC 12V 2. DC-: negative power connection 3. IN1: 1 channel signal to trigger the end , you can set a high or low level control relay 4. IN2: 2 -channel signal to trigger the end , you can set a high or low level control relay Relay Outputs: 1. NO1: After a relay normally open interfaces , relay before floating, shorted pull with COM1 2. COM1: 1 relay common interface 3. NC1: 1 relay normally closed port, COM1 relay shorted before and after the pull- vacant4. NO2:way normally open relay interface, the relay before floating , pull back and COM2 short 5. COM2: 2 Common Interface relay 6. NC2: 2 -way normally closed relay interface relay short front and COM2 , pull vacant post Note:This relay will be triggered by DC 12V, can not trigger with the arduino signal at 5V. Package Included:2*DC 12V 2 Channel Relay Module With Isolated Optocoupler High and Low Level Trigger

Review: Five Stars - JUST WHAT I NEEDED
Review: ottimo - soprattutto per la possibilità di scegliere il tipo di trigger (alto o basso). Si presta a molteplici applicazioni, economico e ben fatto. Soprattutto, averne due in una sola basetta.

## Features

- Can set high or low level trigger with jumper, to meet the demand of more trigger applications;
- With patch optical isolation, strong drive ability and stable performance;
- The module can be high or low by a jumper setting trigger;
- Interface design humane, all interfaces can be connected directly via terminal wiring leads , very convenient ;
- Fault-tolerant design , even if the control line is broken , the relay will not operate ;

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B00LW15F42 |
| Best Sellers Rank | #22,761 in Electronics ( See Top 100 in Electronics ) #370 in International Power Adapters |
| Brand | HiLetgo |
| Brand Name | HiLetgo |
| Coil Voltage | 12 Volts (DC) |
| Connector Type | Screw |
| Connector type | Screw |
| Contact Current Rating | 10 Amps |
| Contact Material | Silver |
| Contact Type | Normally Open |
| Contact material | Silver |
| Contact type | Normally Open |
| Current Rating | 10 Amps |
| Current rating | 10 Amps |
| Customer Reviews | 4.6 out of 5 stars 479 Reviews |
| Item Weight | 50 g |
| Manufacturer | HiLetgo |
| Maximum Switching Current | 10 Amps |
| Maximum Switching Voltage | 250 Volts |
| Minimum Switching Voltage | 12 Volts |
| Model | 3-01-0342 |
| Mounting Type | PCB Mount |
| Mounting type | PCB Mount |
| Operation Mode | Manual |
| Part Number | 3-01-0342 |
| UPC | 702082655962 |
| Unit Count | 2 Count |
| Wattage | 50 watts |

## Product Details

- **Connector Type:** Screw
- **Contact Material:** Silver
- **Contact Type:** Normally Open
- **Current Rating:** 10 Amps
- **Mounting Type:** PCB Mount

## Images

![2pcs DC 12V 2 Channel Relay Module with Isolated Optocoupler High and Low Level H/L Level Trigger Module Triggered by DC 12V - Image 1](https://m.media-amazon.com/images/I/71rOVzcwzIL.jpg)

## Questions & Answers

**Q: So on "low" the relay triggers when the signal voltage falls below 12v? and "hi" when the signal rises above 12v? can you tune the trigger voltage?thx**
A: If you set it to "High" then the relay trips when there is + 12V on INT1 or INT 2. (+12 as in the positive side of the power source)

If you set to low, it will trip when their is -12v (technically 0 volts) on INT 1 or INT2 (-12 as in the negative side of the power source)

**Q: These are locking in the triggered position (Red light on), even with no trigger voltage. Any ideas, did I get bad ones?**
A: When you say no trigger voltage, do you mean that no wires connected? If so then you may have gotten a bad set. Otherwise, check the jumper pins next to the trigger input. See if it set to low.

**Q: What is the minimum to maximum voltage for both the low and high?**
A: Minimum voltage that will trigger high:  2.5V
Maximum voltage that will trigger low:  (Vsupply- 2.5V)

Measured this with Vsupply values of 12.2V and 13.6V. 
Used UNI-T UT61E multimeter for voltage measurements.

**Q: are these latching relays?**
A: No.  They have normally open and normally closed contact points and will flip to the normally closed position when the trigger stops.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Five Stars
*by W***R on 15 June 2017*

JUST WHAT I NEEDED

### ⭐⭐⭐⭐ ottimo
*by C***N on 1 October 2017*

soprattutto per la possibilità di scegliere il tipo di trigger (alto o basso). Si presta a molteplici applicazioni, economico e ben fatto. Soprattutto, averne due in una sola basetta.

### ⭐⭐⭐⭐⭐ Work flawlessly, best value for dual-channel relay switch
*by J***O on 5 August 2024*

I used this to wire up the Siren (bell) and Strobe light for our NVR. Being 2 channels in one piece board save us another unit. All those fit perfect into a small 1-gang box. Worked perfect, very happy with it

## Frequently Bought Together

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*Product available on Desertcart Thailand*
*Store origin: TH*
*Last updated: 2026-07-08*