IO modules

More project flexibility

The OPEN IO modules, which have a modular design and feature powerful communication properties, are ideally suited for all controller applications for technical building automation. They are compact, easy to install and can be universally used with various measuring elements. A total of 16 different versions of the OPEN IO modules are available. Whether as analogue or digital module, as IO combination module or pure input or output module – you will find the right module for your project!

Easy connection in the field

DEOS IO modules are connected to the OPEN EMS controller via the CAN-bus (Controller Area Network) – the most widely used bus system for networking control units. This bus system can accommodate up to 99 DEOS IO modules per line, ensuring high flexibility for future expansion. The bus speed depends on the distance of the IO modules to the controller and is up to 1 Mbit/s depending on the bus quality. For several years now, we have successfully been using the CAN-bus, which offers high speeds and great deal of safety.

Product highlights

Flexible, expandable, powerful!


Visualise the current status of the respective I/Os

Designed for DIN-rail mounting

Enables manual operation in case of emergency or maintenance and meets the requirements for a local priority control/display device in accordance with VDI 3814 Sheet 1

Digital inputs can be used as counters

Ensures error-free operation of the modules

CAN-bus communication with up to 1 Mbit/s and a length of up to 5 km

Analogue inputs with high 24 bit resolution

Digital outputs either with transistors or integrated relay

According to EN ISO 16484-2:2003 and VDI 3814

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Additional contact options

+49 5971 91133-0

Overview of IO modules

Digital in- and output modules

  • Digital input module DI16
  • Digital input and output module DI8DO8T
  • Digital output module DO8T
  • Digital output module DO8TH
  • Digital output module DO8R
  • Digital output module DO8RH
  • Digital output module DO8RH/S

*/N indicates for optimised measuring range for NTC sensors

*+H offers manual operation (LVB) via pushbutton

*T and R indicates the transistor and relay variants

Analogue in- and output modules

  • Analogue input module AI8, AI8/N
  • Analogue input and output module AI8AO4, AI8AO4/N
  • Analogue input and output module AI8AO4H, AI8AO4H/N
  • Analogue output module AO4
  • Analogue output module AO4H

Measured value transformation module MT-R

By using a measured value transformation module MT-R, you can considerably expand the measuring range for resistance sensors of an OPEN IO module and connect resistance sensors with larger measuring ranges. NTC and PTC sensors can absorb resistance values from approx. 200 ohms up to 1 MOhm. Using the MT-R allows you to connect these sensors directly to the analogue inputs of the OPEN IO modules or the integrated analogue inputs of the OPEN EMS. The measured value transformation module MT-R offers 8 analogue inputs and outputs to which you can connect up to 8 PTC/NTC sensors.

Coupler module DS-PKM

The coupler module DS-PKM at the beginning of a series of IO modules is used to feed the 24 VDC supply voltage and the CAN-bus. At the end of the series, it is used to tap the CAN-bus or to terminate it. Such a series of modules may include max. 15 IO modules.

IO modules for your room

In addition to IO modules for installing in switch cabinets and control panel construction, we also offer IO modules with wall mounting for your individual room solution. Whether in office buildings, schools, hotels or administrative buildings – our OPEN IO7 and OPEN IO7-B modules are always the right choice for your building.

Want to know more?

The DEOS Portal provides our system partners with software, technical information, product documentation and other documents for download. Not yet a system partner? As a guest you will also find additional information such as tender documentation or data sheets for our products.