---
product_id: 429776601
title: "Voltage Comparator-LM393 Voltage Comparator Relay Module 1 Channel / 1CH 24V Voltage Comparison Board for Automotive Circuits"
brand: "shandongmt"
price: "€ 94.77"
currency: EUR
in_stock: true
url: https://www.desertcart.de/products/429776601-voltage-comparator-lm393-voltage-comparator-relay-module-1-channel-1ch
store_origin: DE
region: Germany
---

# 24V DC working voltage Dual voltage input comparison 30mA low working current Voltage Comparator-LM393 Voltage Comparator Relay Module 1 Channel / 1CH 24V Voltage Comparison Board for Automotive Circuits

**Brand:** shandongmt
**Price:** € 94.77
**Availability:** ✅ In Stock

## Summary

> ⚡ Empower your circuits with smart voltage control — never miss a beat!

## Quick Answers

- **What is this?** Voltage Comparator-LM393 Voltage Comparator Relay Module 1 Channel / 1CH 24V Voltage Comparison Board for Automotive Circuits by shandongmt
- **How much does it cost?** € 94.77 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.de](https://www.desertcart.de/products/429776601-voltage-comparator-lm393-voltage-comparator-relay-module-1-channel-1ch)

## Best For

- shandongmt enthusiasts

## Why This Product

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

## Key Features

- • **Compact & Robust:** Lightweight 500g module built to withstand demanding environments and ensure long-term durability.
- • **Versatile Application:** Perfectly engineered for automotive, industrial, and household circuit integration.
- • **Energy-Efficient Design:** Operates at a minimal 30mA current, saving power without compromising performance.
- • **Reliable Relay Switching:** Automatically triggers relay based on voltage thresholds to protect and optimize your systems.
- • **Precision Voltage Control:** Compare two voltage signals with pinpoint accuracy for flawless relay activation.

## Overview

The LM393 Voltage Comparator Relay Module operates at 24V DC with a low 30mA current draw, enabling precise voltage comparison between two inputs. It automatically switches a relay when the input voltage crosses a set reference, making it ideal for automotive, industrial, and household circuit applications requiring reliable and efficient voltage monitoring.

## Description

Specifications: Working voltage: DC 24VWorking current: 30 mAStandby current: 15 mAStandby power consumption: <;0.5W Size: 6.1*3.5*1.2cm Packing list:LM393 comparator 24V*1

## Features

- Working voltage: DC 24V
- Working current: 30 mA
- Function 2: Input two voltage signals A and B for comparison. When the signal is higher than the signal B, the relay is closed; when the signal A is less than the signal B, the relay does not act
- Function 1: Input and set the reference voltage, when the input voltage is greater than the reference voltage, the relay is closed. When the input voltage is lower than the reference voltage, the relay does not act
- Suitable for automotive circuits, household equipment supplies, remote controls, industrial testing, etc

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Item Weight | 500 g |
| Item Weight | 500 Grams |

## Images

![Voltage Comparator-LM393 Voltage Comparator Relay Module 1 Channel / 1CH 24V Voltage Comparison Board for Automotive Circuits - Image 1](https://m.media-amazon.com/images/I/61Q0tw2uVuL.jpg)
![Voltage Comparator-LM393 Voltage Comparator Relay Module 1 Channel / 1CH 24V Voltage Comparison Board for Automotive Circuits - Image 2](https://m.media-amazon.com/images/I/61trXQnsw4L.jpg)
![Voltage Comparator-LM393 Voltage Comparator Relay Module 1 Channel / 1CH 24V Voltage Comparison Board for Automotive Circuits - Image 3](https://m.media-amazon.com/images/I/61V9Q7gU3+L.jpg)
![Voltage Comparator-LM393 Voltage Comparator Relay Module 1 Channel / 1CH 24V Voltage Comparison Board for Automotive Circuits - Image 4](https://m.media-amazon.com/images/I/71hq3jIk8WL.jpg)
![Voltage Comparator-LM393 Voltage Comparator Relay Module 1 Channel / 1CH 24V Voltage Comparison Board for Automotive Circuits - Image 5](https://m.media-amazon.com/images/I/71LneyTWffL.jpg)

---

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---

*Product available on Desertcart Germany*
*Store origin: DE*
*Last updated: 2026-03-12*