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Neuron S103-IQRF


UniPi Neuron S103-IQRF is a specialised variant of the basic S103 model, featuring the TR-76D smart IQRF transciever, allowing for an interoperability with various IQRF devices.

Package contents:

  • UniPi Neuron S103-IQRF control unit
  • removable screw connectors
  • DIN rail holder (35 mm)
  • Mervis lifetime license
  • 24V DC power supply (optional)
  • 8GB microSD memory card (optional)

The product features an integrated Raspberry Pi 3 Model B computer

Note: The S103-IQRF variant is not compatible with the Mervis software platform.

338,80 €
280,00 € excl. TAX
Less than 5 items in stock
out of stock


  • TR-76D smart IQRF transciever
  • 4× digital inputs 5-24 V DC
  • 4× transistor outputs max. 750 mA at 50V DC
  • 1× analog output 0-10V
  • 1× analog input 0-10V DC/0-20mA, 4-20mA
  • 1× 1-Wire bus (galvanically isolated)
  • 1× RS485 (Modbus RTU protocol)
  • RTC (Real Time Clock) with backup for up to 7 days
  • 4× 1.2 GHz CPU, 1GB RAM
  • 4× USB 2.0
  • 1× 10/100Mbit Ethernet
  • 4 DIN module size (70×90×60 mm)
  • DIN rail mounting, anodized aluminium case (IP20)
  • 24V DC power supply required
  • microSD memory card required


UniPi Neuron S103-IQRF shares its I/O architecture with the basic S103 model, offering a combination of digital/analog I/O modules and a single RS485 universal bus port. In contrast to the standard S103 however, the S103-IQRF features the TR-76D smart wireless transciever, operating on 868 or 916 MHz bands (can be configured through a corresponding software) and utilizing the IQRF Technology wireless standard. This standard uses a highly reliable wireless mesh communication broadcasted on sub-gigahertz bands. Such technology has two main advantages – long signal range and low power consumption. Thanks to the long range, the user does not have to use repeaters or base stations to extend the signal range, and due to using a patented Directed Flooding mesh networking protocol, the communication retains its reliability even in harsh RF environments.

The transciever contains its own microcontroller and operating systém. Above the OS layer, it is possible to add DPA transport layer containing pre-made hardware profiles. These can be used to quick device setup for needed functionality without any further programming. If needed, there is also a possibility to add a third layer for custom adjustments of device‘s behavior. Additionally, an open-source development kit can be used for configuring the transciever for third-party device connectivity.

Inputs & Outputs

Digital inputs (DI) are used for reading 5-40V DC voltage pulses generated by various binary devices such as digital lightning switches, motion sensors, digital measuring devices (energy meters, flow meters, pressure meters) etc. Digital outputs of the S103-IQRF model also feature an in-built pulse counter. 

Digital outputs (DOare using 5-50V DC voltage pulses at 750mA max. current for switching various two-state devices such as door locks, shutter controls, automatic doors, heat pumps, lights etc. Digital outputs of Neuron controllers also feature the PWM (Power Width Modulation) function, allowing the output to transmit analog signal via binary modulated signal. 

Analog input (AI) reads 0-10V DC voltage signal or 0-20mA current signal. On the S103-IQRF model, analog input can be used for precise current or voltage measurement based on current AI register settings.,

Analog output (AO) serves for regulating and controlling of various devices (three-way valves, heat exchangers, circulation pumps etc.) by 0-10V voltage or 0-20mA current signal. Analog output on the S103-IQRF model allows the user to set output voltage or current through corresponding AO register settings. 

More detailed info about I/O usage and settings can be found in Neuron technical documentation (see Files tab above)

Communication interfaces

By standard, all Neuron-line controllers (except the Neuron 500 line) feature a single RS485 serial line for communication with external devices or connection of extension modules (such as Neuron xS series) using the Modbus RTU protocol. A single RS485 can communicate with up to 256 devices.

Included is also a single 10/100MBit Ethernet port for network communication and a single 1-Wire bus for connection of various 1-Wire sensors (such as digital thermometers). A single 1-Wire channel can communicate with up to 15 sensors at once. 

Other features

Due to 1GB RAM and a 1.2GHz quad-core CPU, all Neuron models possess a very low response rate (ie. delay between input signal reception and output response) of approximately 0.5 ms, giving them a high level of performance.

All components are encased within a durable eloxed aluminium case providing IP20 cover. The unit's size is 4 DIN modules, DIN rail holder is included in the package. 

Possible use

  • Lightning control
  • Boiler control
  • Temperature measurement
  • Remote home control
  • Remote shutter control
  • Notification sending
  • Energy monitoring
  • Gateway for other systems
  • Irrigation systems
  • Building management systems
  • HVAC control and regulation
  • SCADA systems


Neuron is CE and EMC tested and is compliant with all corresponding European PLC standards. In accordance with these standards Neuron can be used in: 

  • Residential buildings, apartments
  • Commercial areas, offices, banks
  • Entertainment areas, cinemas, bars, pubs, dance clubs
  • Outdoor places, gas stations, parking lots, sport centers
  • Areas of light industry, workshops, laboratories, service centers

The EU declaration of conformity can be found in the Files tab (see above). 

Standard Neuron model overview

Model DI DO RO AI AO RS485 Common features
Type S (size on DIN rail: 4 modules = 7 cm)

4 × 1.2 GHz CPU
1-Wire bus (up to 15 sensors per channel)
10/100Mbit Ethernet
Wi-Fi + Bluetooth

S103 4 4 - 1 1 1
S103-G* 4 4 - 1 1 1
S103-IQRF** 4 4 - 1 1 1
Type M (size on DIN rail: 8 modules = 14 cm)
M103 12 4 8 1 1 1
M203 20 4 14 1 1 1
M303 34 4 - 1 1 1
M403 4 4 28 1 1 1
M503 10 4 5 5 5 2
Type L (size on DIN rail: 12 modules = 21 cm)
L203 36 4 28 1 1 1
L303 64 4 - 1 1 1
L403 4 4 56 1 1 1
L503 24 4 19 5 5 2
L513 16 4 10 9 9 3

Extension modules (size on DIN rail: 4 modules = 7 cm)

xS10 16 - 8 - - 1

Extension modules communicate over Modbus. It is possible to connect them to the control unit via RS485 interface. Extension modules are compatible with any control unit with the RS485 interface and Modbus support.

xS30 24 - - - - 1
xS40 8 - 14 - - 1
xS50 6 - 5 4 4 1

* features an integrated wireless GPRS module.
** features an integrated TR-76D smart IQRF transciever

Further info


Guide to set up and use this device, technological documentation
Modbus register map
Table overview of Modbus registers
Instruction leaflet
Regulatory Compliance and safety information added to each unit
Declaration of conformity
Technological specification of the product

Dimensions 70 mm x 90 mm x 60 mm
CPU 4x 1.2 GHz
Digital inputs 4
Transistor outputs 4
Analog inputs 1
Analog outputs 1
RS485 interface Yes
1-Wire bus Yes (galvanically isolated)
USB 2.0 4
Ethernet 10/100 BaseT
Power 24V DC
RTC backup max. 7 days
Mounting DIN (35 mm)
IQRF chip TR-76D (868/916 MHz)
Weigth 450 g
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