---
product_id: 83665408
title: "4 Channel DC 12V RS485 Relay Module Modbus RTU & at Command Remote Control Switch for PLC PTZ Camera Security Monitoring (1, 4 Channels)"
brand: "eletechsup"
price: "HK$5"
currency: HKD
in_stock: false
url: https://www.desertcart.hk/products/83665408-4-channel-dc-12v-rs485-relay-module-modbus-rtu-at
store_origin: HK
region: Hong Kong
---

# 12V Power RS485 Communication 4 Channels 4 Channel DC 12V RS485 Relay Module Modbus RTU & at Command Remote Control Switch for PLC PTZ Camera Security Monitoring (1, 4 Channels)

**Brand:** eletechsup
**Price:** HK$5
**Availability:** ❌ Out of Stock

## Summary

> 🔒 Secure Your Space, Anytime, Anywhere!

## Quick Answers

- **What is this?** 4 Channel DC 12V RS485 Relay Module Modbus RTU & at Command Remote Control Switch for PLC PTZ Camera Security Monitoring (1, 4 Channels) by eletechsup
- **How much does it cost?** HK$5 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.hk](https://www.desertcart.hk/products/83665408-4-channel-dc-12v-rs485-relay-module-modbus-rtu-at)

## Best For

- eletechsup enthusiasts

## Why This Product

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

## Key Features

- • **Robust Communication:** Utilizes RS485 for reliable long-distance data transmission.
- • **Seamless Integration:** Easily connects with PLCs and PTZ cameras for enhanced security.
- • **User-Friendly Design:** Simple setup and operation, ideal for both professionals and DIY enthusiasts.
- • **Versatile Applications:** Perfect for security monitoring, automation, and industrial control.
- • **Remote Control Capability:** Control your devices from anywhere with Modbus RTU & AT commands.

## Overview

The 4 Channel DC 12V RS485 Relay Module is a cutting-edge remote control switch designed for seamless integration with PLCs and PTZ cameras, offering robust communication and versatile applications for security monitoring and automation.

## Description



## Images

![4 Channel DC 12V RS485 Relay Module Modbus RTU & at Command Remote Control Switch for PLC PTZ Camera Security Monitoring (1, 4 Channels) - Image 1](https://m.media-amazon.com/images/I/61wplDHHhvL.jpg)
![4 Channel DC 12V RS485 Relay Module Modbus RTU & at Command Remote Control Switch for PLC PTZ Camera Security Monitoring (1, 4 Channels) - Image 2](https://m.media-amazon.com/images/I/41xSJGKv4oL.jpg)
![4 Channel DC 12V RS485 Relay Module Modbus RTU & at Command Remote Control Switch for PLC PTZ Camera Security Monitoring (1, 4 Channels) - Image 3](https://m.media-amazon.com/images/I/418vie+o+ZL.jpg)
![4 Channel DC 12V RS485 Relay Module Modbus RTU & at Command Remote Control Switch for PLC PTZ Camera Security Monitoring (1, 4 Channels) - Image 4](https://m.media-amazon.com/images/I/61QQ+3-6jcL.jpg)
![4 Channel DC 12V RS485 Relay Module Modbus RTU & at Command Remote Control Switch for PLC PTZ Camera Security Monitoring (1, 4 Channels) - Image 5](https://m.media-amazon.com/images/I/61SeZvIU-1L.jpg)

---

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**Shop now:** [https://www.desertcart.hk/products/83665408-4-channel-dc-12v-rs485-relay-module-modbus-rtu-at](https://www.desertcart.hk/products/83665408-4-channel-dc-12v-rs485-relay-module-modbus-rtu-at)

---

*Product available on Desertcart Hong Kong*
*Store origin: HK*
*Last updated: 2026-01-23*