Complete solution for HVAC and building automation

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Unipi programmable logic controllers and the Mervis software platform represent a complete package for the successful realization of your business in the areas of HVAC (heating, ventilating, air-conditioning) and building automation.

Management of heat sources and ventilation system, collection of data from meters / sensors and data transfer to a cloud database and their analysis. All thanks to the combination of Unipi Patron PLCs and the Mervis software solution.

Diagram: Case study of building monitoring and management using the Patron L527 PLC and the Mervis software platform.

Reliable hardware

Patron PLCs are powered by the Unipi-developed computing module Zulu based on the NXP i.MX 8M Mini processor (4× Arm® Cortex®-A53 with a maximum frequency of 1.8 GHz, 1 GB RAM and onboard 8 GB eMMC memory). The use of our own computing module makes it possible to offer support at all levels, implement various modifications within the custom production and more options for standard development (e.g. integration of new communication protocols).

The Patron range offers multiple product variants with different combinations of I/O, communication interfaces and technologies.

Key features

  • High computing power
  • Suitable from small implementations to large automation projects
  • A wide selection of inputs, outputs and technologies
  • Communication interfaces with wide connectivity, including a wireless version with LTE
  • Additional I/O via the Extension modules
  • Custom product branding and hardware development
  • Fully compatible with the Mervis platform
  • Products in stock
  • Extended 4-year warranty
  • Development and production in the Czech Republic

Mervis software solution

All in one place with the Mervis platform. From the development environment through the local web server to SCADA cloud service including a mobile app. A license is supplied free of charge with Patron PLCs.


Development environment for creation, debugging and remote management of Unipi PLCs. The Mervis IDE supports IEC 61131-3 compliant programming methods for creating controller behavior.

  • Function blocks (FUPLA, FBD) – the code is developed by connecting predefined blocks in a clear graphic interface. In addition, Mervis IDE is equipped with an extensive library of ready-made function blocks (hysteresis, 3-way valves, mathematical operations, counters, time functions, etc.) to simplify and speed up the programming of the relevant logic blocks.
  • Structured text (ST) – an option for advanced users that allows complex functions to be expressed in a few lines of text code.

HMI editor
This feature is integrated directly into the Mervis IDE, allowing you to create an interactive graphical UI. Interface can then be run directly on the PLC (as a web page available only on the local network) or as a cloud service with a web interface on the Mervis SCADA server. In both cases, the website can be opened on a computer, phone or tablet.

  • Implemented collection of toggles, indicators, text fields, adjustable schedules and other elements
  • Intuitive elements design and editing
  • Custom images and icons upload

Mervis SCADA
Mervis SCADA (Supervisory Control and Data Acquisition) is a cloud-based service for remote management, control, visualization and analysis of historic data.

  • All connected systems can be monitored and controlled in a clear graphical interface, regardless of their location
  • Access from anywhere in the world using a secure internet connection
  • Free mobile app available on Google Play and App Store
  • Support of many communication protocols – Modbus, BACnet, 1-Wire, IEC 62056-21, SoftPLC, Jablotron 100, SSCP, M-Bus and SMA-net

Training and partner program

As a part of the partner program, we organize regular Mervis courses, provide technical support directly from developers and many other benefits.

Unipi technology solutions have gained the trust of B2B and B2C customers from more than 65 countries around the world. Our hardware can be found in thousands of successful projects. Contact us and find out how our solution can push your business forward.

Our parts

UniPi 1


51,00 €
42,15 € excl. VAT

In stock > 50 pcs

Unipi Patron S107

Unipi Patron S107

479,00 €
395,87 € excl. VAT

In stock > 20 pcs
Extra > 50 pcs within 10 days after ordering

Unipi Patron L527

Unipi Patron L527

979,00 €
809,09 € excl. VAT

In stock > 10 pcs
Extra > 50 pcs within 10 days after ordering

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