---
product_id: 369053301
title: "2pcs 5V One Channel Relay Module Relay Switch with OPTO Isolation High Low Level Trigger"
brand: "hiletgo"
price: "₩19193"
currency: KRW
in_stock: true
reviews_count: 5
category: "Hi Letgo"
url: https://www.desertcart.kr/products/369053301-2pcs-5v-one-channel-relay-module-relay-switch-with-opto
store_origin: KR
region: South Korea
---

# Max Load AC250V/10A DC30V/10A SMD Optocoupler Isolation High/Low Level Trigger Select 2pcs 5V One Channel Relay Module Relay Switch with OPTO Isolation High Low Level Trigger

**Brand:** hiletgo
**Price:** ₩19193
**Availability:** ✅ In Stock

## Summary

> ⚡ Switch smarter, not harder — power your projects with precision and peace of mind!

## Quick Answers

- **What is this?** 2pcs 5V One Channel Relay Module Relay Switch with OPTO Isolation High Low Level Trigger by hiletgo
- **How much does it cost?** ₩19193 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.kr](https://www.desertcart.kr/products/369053301-2pcs-5v-one-channel-relay-module-relay-switch-with-opto)

## 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 keeps your relay locked in place even if control lines break.
- • **Rock-Solid Isolation:** SMD optocoupler ensures stable, interference-free relay switching every time.
- • **Powerhouse Performance:** Handles up to 250V AC and 10A DC load with ease, perfect for demanding projects.
- • **Plug & Play Convenience:** User-friendly terminal leads and jumper settings for quick high/low trigger customization.
- • **Visual Status Indicators:** Dual LED indicators keep you instantly informed of power and relay status.

## Overview

The HiLetgo 2pcs 5V One Channel Relay Module features genuine quality relays capable of switching AC loads up to 250V/10A and DC loads up to 30V/10A. Equipped with SMD optocoupler isolation for stable performance and a fault-tolerant design that prevents relay activation if control lines fail. It offers flexible high or low level trigger selection via jumper and convenient terminal connections, making it ideal for reliable, professional-grade automation and remote control applications.

## Description

Module description: 1.The module Operating voltage 5V;2.Fault-tolerant design, even if the control line is broken, the relay will not operate;3.The power indicator (green), the relay status indicator (red);4.Module size: 50mm*26mm*18.5mm (L*W*H). Interface: -Input VCC: Relay power supply + GND: Relay power supply - IN: Signal trigger input (High or Low Level Signal, select via jumper) -OutputNO: Relay normally open.COM: Relay Common Pin NC: Relay normally closed. High or Low Level Trigger Select: 1. Use High Level Trigger When ¡°IN¡± input High Level Signal, the ¡°NO¡± connect with ¡±COM¡± When ¡°IN¡± input Low Level Signal, the ¡°NC¡± connect with ¡°COM¡± 2. Use Low Level Trigger When ¡°IN¡± input Low Level Signal, the ¡°NO¡± connect with ¡±COM¡± When ¡°IN¡± input High Level Signal, the ¡°NC¡± connect with ¡°COM¡± 3. High or Low Level Trigger Select Jumper connect with L, Low Level Trigger Jumper connect with H, High Level Trigger Package Included： 2* 5V 1 Channel Relay Module

Review: As long as you have a multimeter this is one of the most reliable relay switches I have used. I have it sealed in a large shrink-wrap tube filled with hot glue freely mounted to the side of my bike.
Review: Connected this relay to Shelly Uni to be able to opens my front door remotely. Works really well

## Features

- The module uses genuine quality relay, normally open interfaces , Maximum load: AC 250V/10A, DC 30V/10A.
- Using SMD optocoupler isolation, strong driving capability, stable performance; trigger current 5mA.
- Fault-tolerant design, even if the control line is broken, the relay will not move.
- The interface design of human nature, all interfaces are available through a direct connection terminal leads, very convenient.
- The Module can be set by jumper high or low trigger.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B00LW15A4W |
| Item model number | 3-01-0340 |
| Manufacturer | HiLetgo |
| Package Dimensions | 12.5 x 8 x 2.21 cm; 32 g |

## Product Details

- **Connector type:** Screw
- **Contact material:** Copper
- **Contact type:** Normally Open
- **Current rating:** 10 Amps
- **Mounting type:** Surface Mount

## Images

![2pcs 5V One Channel Relay Module Relay Switch with OPTO Isolation High Low Level Trigger - Image 1](https://m.media-amazon.com/images/I/61Ynyg4Sd8L.jpg)

## Available Options

This product comes in different **Size** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Review
*by J***B on 19 October 2025*

As long as you have a multimeter this is one of the most reliable relay switches I have used. I have it sealed in a large shrink-wrap tube filled with hot glue freely mounted to the side of my bike.

### ⭐⭐⭐⭐⭐ Review
*by R***H on 30 December 2024*

Connected this relay to Shelly Uni to be able to opens my front door remotely. Works really well

### ⭐⭐⭐⭐ Review
*by G***E on 24 April 2022*

No es adecuado a lo que necesito.

## Frequently Bought Together

- HiLetgo 2pcs 5V One Channel Relay Module Relay Switch with OPTO Isolation High Low Level Trigger
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**Shop now:** [https://www.desertcart.kr/products/369053301-2pcs-5v-one-channel-relay-module-relay-switch-with-opto](https://www.desertcart.kr/products/369053301-2pcs-5v-one-channel-relay-module-relay-switch-with-opto)

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*Product available on Desertcart South Korea*
*Store origin: KR*
*Last updated: 2026-03-04*