What if you could control 16 remote devices using just one RS485 communication line?

Eletechsup N4D3E16 is a compact 16-channel digital input and 16-channel digital output module designed for industrial automation, distributed control systems, and intelligent equipment integration.

Instead of running long, complicated control cables between different locations, N4D3E16 allows digital signals to be transmitted and controlled through an RS485 communication network.

Real-World Application Scenarios

1. Remote Push-Button Control

Imagine a factory where 16 push buttons are installed in a control room, while the corresponding equipment is located in another area.

With two N4D3E16 modules, button signals can be transmitted through an RS485 cable to control remote outputs.

This is particularly useful for distributed machine control and remote operator panels.

2. PLC I/O Expansion – Delta PLC Integration

For automation engineers using Delta DVP PLCs, N4D3E16 provides an additional 16 digital inputs and 16 digital outputs through Modbus RTU communication.

It can be integrated into PLC projects using WPLSoft, helping expand digital I/O capacity without replacing the existing PLC hardware.

3. LED Lighting and Multi-Channel Switching

Control multiple LED driver signals, lighting circuits, and switching channels from a central controller.

The 16-channel output design makes it suitable for multi-zone lighting control and distributed switching applications.

4. Smart Home and Building Automation

Imagine controlling:

• 16 independent electrical control signals

• Automatic curtains

• Multiple lighting zones

• Security and monitoring signals

• Remote switching devices

N4D3E16 can serve as a distributed digital I/O interface between field devices and a central automation controller.

5. Arduino and Custom Control Systems

For developers building customized control panels, N4D3E16 can communicate with compatible RS485 controllers and microcontroller systems.

It provides a practical way to expand digital input and output channels without designing an entire I/O circuit from scratch.

Why Choose Eletechsup N4D3E16?

• 16-channel optically isolated NPN digital inputs

• 16-channel Darlington transistor outputs

• Standard RS485 Modbus RTU communication

• Six control modes: Open, Close, Toggle, Interlock, Momentary and Delay

• Maximum delay setting up to 255 seconds

• Supports up to 64 devices in Modbus mode

• Compact PCB design with optional DIN-rail enclosure

• Suitable for distributed I/O and remote signal transmission

Important: The Darlington outputs are low-current NPN outputs, rated up to 300mA per channel. They are designed for signal switching and compatible low-current loads, not direct high-power motor or AC load switching.

Eletechsup – More Than Just an I/O Board

At Eletechsup, we develop practical RS485 Modbus RTU modules to help engineers simplify wiring, expand control capabilities, and build flexible automation systems.

We also support OEM/ODM customization for customers who need special functions, customized hardware, or application-specific control solutions.

Looking for a reliable 16DI + 16DO RS485 solution for your next project?

Contact Eletechsup to discuss your application.

🌐 Website: https://eletechsup.com/

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