4.3” HMI (Human Machine Interface) – With RS232/RS485/RS422/Ethernet, 800×480 Resistive Touch Screen

Description

This 4.3-inch industrial-grade Human Machine Interface (HMI) is designed to provide reliable visualization, control and real-time data interaction for compact automation systems. Built around a dual-core 1 GHz ARM Cortex-A7 processor, it delivers stable performance and responsive operation in demanding industrial environments where space and efficiency are critical.

The unit features a 4.3-inch TFT LCD display with a 16:9 aspect ratio and 800 × 480 resolution, offering clear and sharp visualization for machine status, parameters and process data. The integrated resistive touchscreen enables precise and dependable input, even when operated with gloves, making it well suited for factory floors, control panels and embedded machine interfaces.

 

Robust Industrial Design and Hardware

The HMI is engineered for reliable operation in industrial environments, featuring a durable enclosure and a front panel rated at IP65 for protection against dust and water ingress. This makes it suitable for installation in control cabinets, machinery panels and exposed industrial settings.

The device uses natural air cooling, eliminating the need for active ventilation and reducing maintenance requirements while ensuring stable long-term operation. Its compact mechanical profile allows easy panel mounting, making it ideal for applications with limited space without compromising functionality or usability.

Built for continuous and reliable operation in demanding environments and harsh conditions, the internal electronics are protected by industrial-grade PCB coating. This enhances resistance to moisture and corrosion through a three-layer conformal coating process and an isolated power supply design, while supporting wide operating temperature and humidity ranges required for manufacturing, automation and process control systems.

 

Connectivity and System Integration

The HMI provides flexible connectivity options for seamless integration into industrial automation systems. It is equipped with one self-adaptive Ethernet port (10/100 Mbps), enabling reliable network communication with PLCs, controllers and supervisory systems, such as the EQSP32 IoT controller, over standard industrial networks.

Connectivity options also include three serial communication interfaces (COM1: RS232/RS485/RS422, COM2: RS485, COM3: RS232), for simultaneous communication with multiple external devices.

The HMI also features Type-C OTG USB connectivity, supporting both host and device operation. This provides convenient options for peripheral connection, system configuration and data exchange, ensuring easy integration with existing control architectures and third-party automation systems in a wide range of industrial applications.

 

User Interface Design and Configuration

The HMI is designed to support user interface development, allowing users to easily build intuitive operator interfaces for monitoring and control applications. Its configuration environment enables rapid development of interactive dashboards, process screens and alarm interfaces.

The platform supports the use of built-in interface components as well as custom graphical elements, allowing for a wide range of use cases, from simple machine control panels to more advanced industrial visualization systems.

 

Key Features of 4.3-inch Resistive Touch HMI

• High-Performance Processing: Dual-core ARM Cortex-A7 processor ensures stable and responsive operation for industrial control and visualization.
• Bright and Clear Display: 4.3-inch TFT LCD screen with a 16:9 aspect ratio, 16-bit color and 800 × 480 resolution, delivers clear process visualization.
• Viewing Angle: 80° viewing angle ensures clear visibility from different positions in front of the control panel.
• Intuitive Touch Interface: 4-wire resistive touchscreen offers precise and reliable control, even when operated with gloves.
• Flexible Communication: Equipped with Ethernet, USB-C OTG Host/Device and three serial communication ports supporting RS232, RS485 and RS422 for versatile system connectivity.
• Seamless Integration: Fully programmable, enabling fast and code-free creation of dashboards, control screens and alarms.
• Enhanced PCB Protection: Industrial-grade conformal coating and isolated power design improve moisture resistance and corrosion protection in harsh environments.
• Rugged Industrial Design: Durable ABS enclosure and IP65 front panel protection ensure long-term reliability in demanding applications.
• Energy Efficient: Operates from DC 24 V (9–28 V range) with low < 2.5 W power consumption for efficient, continuous operation.
• Easy Installation: Compact form factor designed for panel mounting; supports fast integration into control cabinets and machine panels.
• Long Service Life: LED backlight rated for 50,000 hours of operation, minimizing maintenance and downtime.
• Reliable Operation: Natural air cooling and wide 0 – 50 °C operating range guarantee stable performance in industrial environments.

 

 

Technical Specifications of 4.3-inch Resistive Touch HMI

Category	Parameter	Specification
System	Configuration Platforms	Windows 7 / 10 / XP
	Processor	Dual-core ARM Cortex-A7 @ 1 GHz
	System Memory	128 MB Flash + 128 MB DDR3
	Real-time-clock (RTC)	Built-in real-time clock
Display	Display Size	4.3″ TFT LCD (16:9 wide screen)
	Display Resolution	800 × 480 pixels
	Color Depth	16-bit color
	Brightness	250 cd/m²
	Backlight Type	LED
	Backlight Lifetime	50,000 hours (50k)
	Touch Technology	4-wire resistive touch panel
	Viewing Angle	80°
Communication Interfaces	Ethernet Port	1 × 10/100 Mbps RJ45 (self-adaptive)
	Serial Interfaces	COM1: RS232/RS485/RS422 COM2: RS485 COM3: RS232
	USB Ports	USB Type-C OTG (Host / Device)
	SD Card Slot	N/A (Not available)
Power & Performance	Input Voltage	DC 24 V (nominal), range DC 9–28 V
	Power Consumption	< 2.5 W
	Power Protection	Surge and lightning protection
	Power-Fail Tolerance	< 5 ms
Environmental Ratings	Operating Temperature	0 – 50 °C
	Storage Temperature	-20 – 60 °C
	Operating Humidity	10 – 90 % RH (non-condensing)
	Vibration Resistance	10 – 25 Hz (X/Y/Z 2 G, 30 min)
EMC & Electrical Protection	Surge Immunity	±1 kV
	EFT Immunity	±2 kV
	ESD Protection	4 kV (contact), 8 kV (air)
Mechanical & Physical	Enclosure Material	ABS housing
	Cooling Method	Natural air convection
	PCB Protection Coating	Anti-corrosion, moisture-proof, three-layer conformal coating with isolated power design
	Ingress Protection	Front IP65 (NEMA panel), Rear IP20
	Mounting Cutout (mm)	132 × 80
	Product Dimensions (mm)	138 × 86 × 32
	Net Weight	305 g

  

Certification and Compliance

Applicable Standards for Electromagnetic Compatibility (EMC) under Directive 2014/30/EU:

HMI — Human Machine Interface
Area	Applicable Standard(s)
EMC (Emission)	EN 55032:2015
EMC (Harmonics)	EN 61000-3-2:2014
EMC (Flicker / Voltage Fluctuation)	EN 61000-3-3:2013
EMC (Immunity)	EN 55024:2010 + A1:2015

 

Support and Documentation

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