SM35-J-T20 Unitronics Samba 3.5" colour touchscreen HMI and PLC with onboard I/O configurations

Why Choose the Unitronics SM35-J-T20 PLC with Integrated Touchscreen HMI?

The Unitronics SM35-J-T20 is a compact and powerful PLC with integrated colour touchscreen HMI, designed to provide cost-effective machine control and industrial automation functionality within a single device. As part of the highly successful Unitronics Samba series, it combines programmable logic control, operator interface and onboard I/O to reduce panel space, simplify wiring and minimise installation costs.

Developed for OEM machine builders, control panel manufacturers and automation engineers, the SM35-J-T20 delivers reliable PLC performance alongside an intuitive colour touchscreen interface. Its integrated architecture allows both PLC programming and HMI development within a single software environment, helping reduce engineering time and simplify project deployment.

Featuring 12 digital inputs, 2 analogue inputs and 8 transistor outputs, the SM35-J-T20 is ideally suited for packaging equipment, material handling systems, HVAC installations, pumping stations and industrial process control applications. The controller operates from a 24 VDC power supply and supports a wide range of industrial communication options through optional expansion modules.

Key Advantages

• Integrated PLC and colour touchscreen HMI in one compact unit.
• 3.5-inch TFT colour touchscreen display for intuitive operation.
• 12 digital inputs and 8 transistor outputs.
• Built-in analogue inputs for process monitoring applications.
• Reduces wiring complexity and panel space requirements.
• Supports optional Ethernet, RS485 and CANbus communications.
• Ideal for machine builders, OEMs and industrial automation projects.

Key Features

• Unitronics Samba PLC + HMI platform.
• 3.5-inch TFT colour touchscreen display.
• 320 × 240 pixel resolution.
• 12 digital inputs including high-speed counter capability.
• 2 analogue inputs.
• 8 transistor outputs.
• Integrated RS232 communication port.
• Real-time clock and data logging functionality.
• MODBUS communication support.
• Programming via Unitronics VisiLogic software.

Technical Specifications

• Manufacturer: Unitronics
• Series: Samba PLC + HMI
• Model: SM35-J-T20
• Product type: PLC with integrated touchscreen HMI
• Supply voltage: 24 VDC
• Operating voltage range: 20.4 to 28.8 VDC
• Display size: 3.5-inch TFT colour touchscreen
• Display resolution: 320 × 240 pixels
• Digital inputs: 12
• Analogue inputs: 2 configurable inputs
• Transistor outputs: 8 PNP transistor outputs
• Communication: RS232 onboard, optional Ethernet, RS485 and CANbus
• Programming software: Unitronics VisiLogic
• Protection rating: IP65 / IP66 / NEMA 4X front panel
• Operating temperature: 0°C to 50°C
• Dimensions (H × W × D): 109 × 114.1 × 68 mm
• Weight: Approx. 205 g

Efficient PLC and HMI Integration

The SM35-J-T20 combines machine control, operator interface and communication functions into a single automation platform. This integrated design reduces hardware requirements while providing operators with intuitive touchscreen control and real-time system monitoring.

Using Unitronics VisiLogic software, engineers can develop both PLC ladder logic and HMI screens within a unified programming environment. Advanced capabilities such as data logging, recipe management, alarms, PID control and remote communications make the controller suitable for a wide variety of industrial applications.

Typical Applications

• Packaging and assembly machinery.
• OEM machine automation systems.
• Conveyor and material handling equipment.
• HVAC and building automation.
• Pumps and water treatment systems.
• Industrial process monitoring and control.
• Food and beverage production equipment.

Trusted by Automation Engineers Worldwide

Unitronics Samba PLCs are widely deployed by machine builders and automation professionals who require reliable control, integrated touchscreen operation and excellent value within a compact industrial controller platform.