.

Date:
14.07.2025
Author:
Inventia Team

The EX-A41 is a versatile and compact analogue signal expansion module (4 inputs and 1 4-20 mA output), featuring a number of advantages such as galvanic isolation of each single channel, support for Modbus RTU/TCP protocols, available interfaces in the form of an Ethernet and RS-485 port, as well as local and remote configuration and firmware update.

Find out:

• Features that make real improvements to your system – the EX-A41 module’s strengths

• One device – many applications: from industry to building automation

• Technical features and functions

• Why choose the EX-A41?

• Find out the answers to frequently asked questions

• Safety and reliability – galvanic isolation minimises the risk of signal interference and equipment damage – ensures measurement stability even in harsh industrial environments.
• Universal application – the EX-A41 can be used not only as an extension to telemetry modules MT-121, MT-151, MT-156, but also as an independent component in any distributed measurement and control system.
• Communication openness – the module communicates directly with SCADA systems, programmable logic controllers (PLCs), DCS, HVAC systems and others – thanks to support for the popular Modbus RTU and TCP protocol.
• Remote administration – using Ethernet, firmware can be conveniently updated, and settings can be changed without being physically present at the control cabinet.
• Compact design and easy installation – housing for DIN rail installation, detachable screw strips and compact dimensions – ideal for limited installation spaces.
• Access security – the module is password protected, increasing the level of security in critical systems.

• SCADA and DCS systems – the EX-A41 directly integrates with higher-level control systems, providing measurement data and output signals.
• HVAC and building automation systems – supports the control and supervision of air conditioning, ventilation, heating and cooling systems.
• PLC and local controllers – extends the capabilities of PLC-based systems by providing additional analogue inputs and outputs.
• Industrial process monitoring – ideal for extending telemetry systems with analogue values, such as temperatures, pressures or liquid levels.
• Measuring stations and building automation – great for controlling boiler rooms, pumping stations or environmental monitoring – by scaling up to engineering units.
• Power generation and photovoltaics – it can collect signals from current and voltage transducers, as well as generate control signals for devices. 

Photo from implementation: Maciej Sawicki Control System

The EX-A41 is more than just an extension to a telemetry module. It is a fully-fledged component of SCADA, PLC, DCS or HVAC systems, which allows you to easily extend your measurement and control capabilities, regardless of the system architecture. With it, your system will operate more stably, efficiently and safely. Whether in manufacturing, power generation, environmental monitoring or automation, the EX-A41 offers the confidence, security and convenience of implementation wherever precise handling of 4-20 mA signals is required. 

Ideal for companies that: 

• want to expand their automation systems flexibly, 

• are looking for reliability and protection against interference, 

• use multiple devices communicating in the Modbus standard, 

• require remote management and updates, 

• value easy integration into their industrial infrastructure – the EX-A41 is a professional PLUG&PLAY solution, reducing installation complexity, ensuring efficient diagnostics and readiness for digital transformation.