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UniPi 1.1 Lite - complete set

UniPi 1

The UniPi 1.1 Lite Complete set contains all necessary components for installation and initial setup of the UniPi 1.1 Lite 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 sensor
DIN rail holder
Power supply

199,00 €
164,46 € excl. VAT
Less than 20 items in stock


UniPi 1.1 Lite is an extension for Raspberry Pi together makes a simple programmable controller for universal use in systems of automation, regulation, and monitoring. It is Lite version of UniPi 1.1 with a smaller number of functions, inputs, and outputs and suitable for use in simple projects.

UniPi 1.1 Lite features

  • 6 × changeover relays rated 250V AC/5A or 24V DC/5A
  • 6 × galvanically isolated digital inputs triggered by 5-24V DC voltage with minimum pulse length of 5ms
  • 1 × 1-Wire port for connection to 1-Wire thermometers and other sensors
  • short circuit LED indicator
  • compatible with Raspberry Pi 3, Raspberry Pi 2 a Raspberry Pi B+
  • connection with Raspberry Pi via a supplied ribbon cable
  • possible to equip with DIN rail mounting and plastic cover
  • requires an external 5V 2.5A power supply with 2.1mm DC jack

UniPi 1.1 Lite 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, smarthome systems, industrial automation and many more. The 1.1 Lite is a lightened variant of the UniPi 1.1 board, featuring reduced number of I/O modules in a more compact package. It represents the simplest and cheapest solution we offer.  Aside from the board itself, the complete set contains the Raspberry Pi computer, DIN rail holder, protective cover and other accessories, making the complete set an all-in-one solution without the need for purchasing other components separately. 

UniPi 1.1 Lite 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 an 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 in accordance with the IEC 61131-3 programming standard. 

UniPi 1.1 Lite is compatible with a lot of software. For UniPi control, we recommend either our open source driver EVOK or our advanced control software, Mervis. You may also be interested in the introduction to choosing the right software.

Inputs & Outputs

Digital inputs are designed for 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.

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. Neuron unit relays are designed for 5A maximum current and 250V alternating/30V direct voltage.

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 in accordance with 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.


Declaration of conformity
Detailed technological guide for the product

Digital inputs 6
Relay outputs 6
Power 5 V DC / 2.4 A
Dimensions 105 mm × 88 mm × 20 mm
1-Wire bus Yes
Weigth 210 g
Mounting DIN rail mount (35 mm)
RTC battery socket No
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