Unitronics SM43-J-RA22 Samba PLC with integrated 4.3 inch colour touchscreen HMI, analogue I/O, PT100 and thermocouple inputs, relay outputs and advanced industrial communications.
£477.75
The Unitronics SM43-J-RA22 is a powerful and compact PLC with integrated colour touchscreen HMI, designed for machine automation, process control and industrial monitoring applications. As part of the advanced Unitronics Samba series, it combines a programmable logic controller, operator interface and onboard I/O into a single device, helping reduce hardware costs, simplify panel design and accelerate project deployment.
Designed for OEM machine builders, control panel manufacturers and automation engineers, the SM43-J-RA22 provides advanced control functionality alongside a high-resolution 4.3-inch TFT colour touchscreen. The all-in-one design enables both PLC programming and HMI development within a single software environment, simplifying engineering, commissioning and maintenance.
Featuring 12 digital inputs, 2 analogue inputs, 2 PT100/thermocouple inputs, 8 relay outputs and 2 analogue outputs, the SM43-J-RA22 is ideal for packaging equipment, HVAC systems, water treatment plants, process control machinery and OEM automation applications. The controller operates from a 24 VDC power supply and supports optional Ethernet, RS485 and CANbus communications.
The SM43-J-RA22 is designed for applications requiring integrated machine control, process monitoring and operator interaction. With built-in analogue inputs, temperature measurement capability and analogue outputs, the controller can directly interface with sensors, transmitters, valves and other process devices without additional hardware.
Using Unitronics VisiLogic software, engineers can create PLC logic and HMI applications within a single programming environment. Features such as data logging, alarm management, PID control, recipe handling, remote access and industrial communications help improve productivity while reducing engineering effort.
| Voltage | 24 V |
|---|---|
| IP Rating | IP66 |
| Series | Samba PLC + HMI |
| Product type | PLC with integrated touchscreen HMI |
| Supply voltage | 24 VDC |
| Operating voltage range | 20.4 to 28.8 VDC |
| Display size | 4.3-inch TFT colour touchscreen |
| Display resolution | 480 × 272 pixels |
| Digital inputs | 12 |
| Analogue inputs | 2 |
| PT100 / Thermocouple inputs | 2 |
| Relay outputs | 8 |
| Analogue outputs | 2 |
| Protection rating | IP66 / NEMA 4X front panel |
| Operating temperature | 0°C to 50°C |
| Dimensions (H × W × D) | 136 × 105.1 × 61.3 mm |
| Weight | Approx. 365 g |
The SM43-J-RA22 is used for industrial automation applications requiring integrated PLC control, touchscreen operation, analogue I/O and temperature monitoring capabilities.
The controller includes 12 digital inputs, 2 analogue inputs, 2 PT100/thermocouple inputs, 8 relay outputs and 2 analogue outputs.
The unit features a 4.3-inch TFT colour touchscreen display with a 480 × 272 pixel resolution.
Yes. Optional Ethernet, RS232/RS485 and CANbus modules can be installed to provide additional connectivity.
The SM43-J-RA22 is programmed using Unitronics VisiLogic software, allowing PLC programming and HMI development within a single engineering environment.
Unitronics Samba controllers are widely deployed by OEMs, system integrators and automation professionals who require reliable machine control, advanced touchscreen operation and flexible communications in a compact industrial controller platform.
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LED Controls is a specialist distributor of factory automation and industrial controls, supplying OEMs, machine builders, panel builders and end users throughout the UK and worldwide. As a trusted UK distributor for many of the world’s leading automation manufacturers, we provide industrial control products, technical expertise and bespoke automation solutions backed by outstanding customer service.
2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...
2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...