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UniPi 1.1 - complete set

UniPi 1

The UniPi 1.1 Complete set contains all necessary components for installation and initial setup of the UniPi 1.1 control unit. The set consists of a DIN rail mount for easy installation into a distribution box, plastic protective cover and a license for the Mervis software platform, suitable for home automation projects and energy management. 

Package contents 

SD card
Raspberry Pi
1-Wire temperature senzor
DIN rail holder
Power Supply

259,00 €
214,05 € excl. VAT
Less than 20 items in stock


UniPi v1.1 Complete set is an ideal choice for customers planning to base their projects on UniPi 1.1. It represents the best combination for control of three-way valves or boilers using the Opentherm protocol. UniPi can be easily connected to a personal computer, allowing you to immediately start connecting your smart home system. 


  • Compatible with Raspberry Pi B+, Raspberry Pi 2 and Raspberry Pi 3
  • 8 × Finder changeover relays rated for 250V AC / 5A or 24V DC / 5A
  • 12 + 2* galvanically isolated digital inputs (5-24V DC voltage with a minimum pulse length of 5ms)
  • 2 × 0-10V analogue inputs
  • 1 × 0-10V analogue output
  • 1 × 1-Wire port for connection to 1-Wire thermometers and other sensors
  • 1 × I2C port for expansion
  • 1 × UART port for external serial communications
  • socket for battery powering RTC
  • connection with Raspberry Pi via a supplied ribbon cable
  • possible to extend via extension modules over I2C
  • possible to equip with DIN rail mounting and plastic cover
  • requires an external 5V 2.5A power supply with 2.1mm DC jack.

*Digital inputs 13 and 14 are not accessible by default. To use them, please follow this manual

UniPi 1.1 is an extension board for the Raspberry Pi computer, allowing it to serve as a programmable logic computer (PLC) in applications such as automation, regulation, monitoring, smart home systems, industrial automation and many more. It is a direct predecessor of the Neuron PLC line.. The board can be extended via an EMO-R8 extension module, adding another 8 relay outputs. Users can also purchase a DIN rail holder for installation into the distribution box and plastic protective cover.

UniPi 1.1 is compatible with a wide variety of software. For programming the UniPi we recommend either our open source API EVOK. or our advanced node-based control software, MervisEVOK is our official open-source application programming interface (API), designed for remote access to our control units. It represents a simple software allowing the user easy access to hardware without extensive programming. Mervis is then our primary, officially supported software platform for UniPi PLC management. It is an extensive set of tools for advanced monitoring and regulation, developed under the IEC 61131-3 programming standard. 

Inputs & Outputs

Digital inputs are designed for the reading of binary values (0/1, on/off, open/closed etc.) and are thus suitable for connecting switches, motion sensors, window or door magnetic locks etc.

Caution: The cable for connection of Raspberry Pi to the UniPi board does not contain wires for digital inputs 13 and 14. To use these inputs, it is necessary to create a custom connection according to this tutorial

Analogue inputs are used to read 0-10V voltage, making them suitable for reading values from analogue sensors such as temperature sensors, pressure meters, tensometers etc.

The analogue output can be used for control of external devices such as three-way valves or heat exchangers via 0-10V voltage or 0-20 mA

Relay outputs are designed for switching two-state devices via alternating or direct voltage. Relays thus can be used to switch boilers, water heaters, electric motors or other stronger relays.

You may also be interested in our introduction to choosing the right software for your UniPi.

MERVIS software

The system is designed particularly for control of technical equipment in smart buildings, monitoring, evaluation, and management of energy and media consumption. The system facilitates energy and media savings of up to 30%!

Easily configurable: UniPi with Mervis software is under the IEC 61131-3 standard for PLCs, one can easily configure the whole system and set it to the final, user-friendly form. It responds to present-day requirements of functional and flexible systems. 

Cloud database: Values from the single data points are periodically stored in the database. In this database, the data are saved in a special form which enables storing and managing a great amount of data (in the order of billions and more records) and fast search and display of the required data at the same time.

You will get a login for a remote proxy server which allows you to access your UniPi remotely in any network, and 10 data points for storing your data on Mervis Database for free. With Mervis HMI you can also create and design your local web according to your needs.

1Wire temperature sensor

1-Wire temperature sensor DS18B20 is a digital temperature sensor protected in water-resistant stainless steel cap (6*30mm) with 1,5m long cable with RJ45 connector, which uses 1-Wire protocol and is compatible with UniPi.


1-Wire 8 port hub

19,90 €
16,45 € excl. VAT

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UniPi 1

8-Relay Addon EMO-R8

49,90 €
41,24 € excl. VAT

More than 20 items in stock Add to cart +

Opentherm to Modbus gateway

133,10 €
110,00 € excl. VAT

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UniPi 1

Magnetic contact

7,90 €
6,53 € excl. VAT

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1-Wire Temperature Sensor

8,91 €
7,36 € excl. VAT

More than 20 items in stock Show variants

SEDtronic 1-Wire sensor

14,99 €
12,39 € excl. VAT

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