Pulse Input S0 to NB‑IoT

Our converter with four S0 inputs to NB-IoT is designed for readings from devices with a pulse output—such as electricity meters, water meters and other measurement devices. It enables the integration of traditional S0 meters into the NB-IoT wireless network, facilitating data collection and analysis at the user-defined intervals.

With the option of local configuration via cable and remote configuration over the network, our device significantly reduces the total cost of ownership in projects that require frequent remote readings of the S0 meters.

How Does it Work?
NB-IoT connectivity – today, the  Narrowband IoT coverage is available almost everywhere, with a reach even in hard-to-access areas. Additionally, SIM cards can be obtained for as little as 1 EUR per year.
The antenna connector for the wM-Bus reception is designed to minimize losses, ensuring the highest possible reception sensitivity. As a result, we can cover up to 6 floors, depending on the type of building.
The internal NB-IoT antenna provides sufficient coverage and eliminates the need for two external antennas, preventing the possibility of them being swapped during the installation.
Thanks to the standard SMA connector, you can use a cable to extend the antenna from the hard-to-reach places.
A big battery designed  to last over 10 years with the daily readings from Monday to Friday.
Waterproof casing (IP67) for the outdoor installations – for example, even on the street lighting in the middle of a housing estate.
During the manufacturing, we insert your SIM card, connect the battery and upload your configuration. This way, you don't need to spend extra time on the device and it can go directly to the installation.
Screws that won't fall out of the cover during installation make the assembly easier and ensure that the IP rating of the converter is not compromised.
How Does it Work?
NB-IoT connectivity – now offers coverage almost everywhere, reaching even into basements and SIM cards can be obtained for as little as 1 EUR per year.
The antenna connector is designed to minimize losses, ensuring the highest possible reception sensitivity. This allows you to use the device inside a heat exchange station while still maintaining a strong signal.
WAGO connector – the industry-standard terminal block for a quick and secure connections. It shortens the installation time and helps to eliminate mistakes caused by the insufficient wire tightening in the terminal block.
Thanks to the standard SMA connector, you can use a cable to extend the antenna from the hard-to-reach places.
For the installations without an electrical power supply, the converter is available in a battery-powered version, ensuring a long battery life even with the frequent data readings.
IP67 waterproof enclosure for the outdoor installations – ideal for the mounting on the wall of a heat exchange station.
Support for up to 16 connected devices, providing maximum installation flexibility and ensuring that you won't need to return for a second device if there's one more meter than expected.
Screws that won't fall out of the cover during installation make the assembly easier and ensure that the IP rating of the converter is not compromised.
The converter, with a support for the M-Bus standard, is compatible with various meters from different manufacturers, ensuring the versatility and the easy integration.
Data filtering at the hardware level using the VIF and the DIF values for the efficient shortening of the M-Bus message. The message remains standardized and can be processed by any M-Bus parser.
For the demanding applications, a version with an external power is available, providing the continuous power supply to the M-Bus.
How Does it Work?
Data filtering at the hardware level using the VIF and the DIF values for efficient shortening of the M-Bus message. The message remains standardized and can be processed by any M-Bus parser.
The antenna connector is designed to minimize losses, ensuring the highest possible reception sensitivity. This allows you to use the device inside a heat exchange station while still maintaining a strong signal.
WAGO connector – the industry-standard terminal block for a quick and secure connections. It shortens the installation time and helps to eliminate mistakes caused by the insufficient wire tightening in the terminal block.
Thanks to the standard SMA connector, you can use a cable to extend the antenna from the hard-to-reach places.
Communication tested within the largest LoRaWAN networks in Europe as well as in the isolated systems.
For the installations without an electrical power supply, the converter is available in a battery-powered version, ensuring a long battery life even with the frequent data readings.
IP67 waterproof enclosure for the outdoor installations – ideal for the mounting on the wall of a heat exchange station.
Support for up to 16 connected devices, providing maximum installation flexibility and ensuring that you won't need to return for a second device if there's one more meter than expected.
Screws that won't fall out of the cover during installation make the assembly easier and ensure that the IP rating of the converter is not compromised.
The converter, with a support for the M-Bus standard, is compatible with various meters from different manufacturers, ensuring the versatility and the easy integration.
For the demanding applications, a version with an external power supply is available, that enables the continuous M-Bus power supply.
How Does it Work?
The antenna connector is designed to minimize losses, ensuring the highest possible reception sensitivity. This allows you to use the device inside a heat exchange station while still maintaining a strong signal.
WAGO connector – the industry-standard terminal block for a quick and secure connections. It shortens the installation time and helps to eliminate mistakes caused by the insufficient wire tightening in the terminal block.
Thanks to the standard SMA connector, you can use a cable to extend the antenna from the hard-to-reach places.
Communication tested within the largest LoRaWAN networks in Europe as well as in the isolated systems.
For the installations without an electrical power supply, the converter is available in a battery-powered version, ensuring a long battery life even with the frequent data readings.
IP67 waterproof enclosure for the outdoor installations – ideal for the mounting on the wall of a heat exchange station.
The converter is compatible with  various protocols, including Modbus RTU, Modbus ASCII, IEC 62052 and DLMS.
Screws that won't fall out of the cover during installation make the assembly easier and ensure that the IP rating of the converter is not compromised.
Support for up to 128 connected devices, providing the maximum flexibility during the installation and ensuring that you won’t need to return for a second device if there's one more meter than expected.
For the demanding applications, a version with an external power supply is available, allowing the continuous power supply to the sensors.
How Does it Work?
The antenna connector is designed to minimize losses, ensuring the highest possible reception sensitivity. This allows you to use the device inside a heat exchange station while still maintaining a strong signal.
WAGO connector – the industry-standard terminal block for a quick and secure connections. It shortens the installation time and helps to eliminate mistakes caused by the insufficient wire tightening in the terminal block.
Thanks to the standard SMA connector, you can use a cable to extend the antenna from the hard-to-reach places.
NB-IoT connectivity – now offers coverage almost everywhere, including the underground levels and SIM cards can be obtained for as little as 1 EUR per year.
For the installations without an electrical power supply, the converter is available in a battery-powered version, ensuring a long battery life even with the frequent data readings.
IP67 waterproof enclosure for the outdoor installations – ideal for the mounting on the wall of a heat exchange station.
The converter is compatible with  various protocols, including Modbus RTU, Modbus ASCII, IEC 62052 and DLMS.
Screws that won't fall out of the cover during installation make the assembly easier and ensure that the IP rating of the converter is not compromised.
Support for up to 128 connected devices, providing the maximum flexibility during the installation and ensuring that you won’t need to return for a second device if there's one more meter than expected.
For the demanding applications, a version with an external power is available, allowing the continuous power supply to the external sensors.
How Does it Work?
The antenna connector is designed to minimize losses, ensuring the highest possible reception sensitivity. This allows you to use the device inside a heat exchange station while still maintaining a strong signal.
Support for up to 4 connected devices, providing the maximum flexibility during the installation. This ensures that you won’t need to return for an additional device if there’s one more meter than expected during the installation.
Thanks to the standard SMA connector, you can use a cable to extend the antenna from the hard-to-reach places.
Communication tested within the largest LoRaWAN networks in Europe as well as in the isolated systems.
Two-piece EUROCLAMP connector – an industry-standard two-piece terminal block for  quick and secure connections. The advantage of the two-piece terminal block is the ability to prepare the meter connections in advance and then simply attach the terminal block to the PCB.
A big battery with a lifespan of over 10 years, considering the frequency of readings.
IP67 waterproof enclosure for the outdoor installations – ideal for the mounting on the wall of a heat exchange station.
The converter, with its wide input tolerance, is compatible with various meters from different manufacturers, ensuring the versatility and an easy integration.
Screws that won't fall out of the cover during installation make the assembly easier and ensure that the IP rating of the converter is not compromised.
Storing the historical readings and repeatedly sending them in each message to ensure the data recovery even if one or two messages are lost.
For the installations without an electrical power supply, the converter is available in a battery-powered version, ensuring long battery life even with the frequent data readings. For the demanding applications, a version with an external power is available.
How Does it Work?
NB-IoT connectivity – these days, it already has a coverage almost everywhere, with the ability to reach even  the basements.  SIM cards can be obtained for as little as 1 EUR per year.
Support for up to 4 connected devices, providing the maximum flexibility during the installation. This ensures that you won’t need to return for an additional device if there’s one more meter than expected during the installation.
Two-piece EUROCLAMP connector – an industry-standard two-piece terminal block for  quick and secure connections. The advantage of the two-piece terminal block is the ability to prepare the meter connections in advance and then simply attach the terminal block to the PCB.
The antenna connector is designed to minimize losses, ensuring the highest possible reception sensitivity.
The device can be used inside a heat exchange station and despite the high-temperature environment, it provides a stable signal. Thanks to the standard SMA connector, you can use a cable to extend the converter from the hard-to-reach places.
A large battery with a lifespan of over 10 years, taking into account the frequency of readings.
Waterproof enclosure (IP67) for the outdoor installations – ideal for mounting on the wall of a water meter shaft.
The converter, with its wide input tolerance, is compatible with various meters from different manufacturers, ensuring the versatility and an easy integration.
Screws that won't fall out of the cover during installation make the assembly easier and ensure that the IP rating of the converter is not compromised.
Storing the historical readings and repeatedly sending them in each message to ensure the data recovery even if one or two messages are lost.
For the installations without an electrical power supply, the converter is available in a battery-powered version, ensuring long battery life even with the frequent data readings. For the demanding applications, a version with an external power is available.
How Does it Work?
An internal antenna for the ATEX certification compatibility and to accelerate the installation process.
A display on the device for the immediate viewing of the reading, time and the unique gas meter ID, configurable by the user.
A user-replaceable battery with a lifespan of over 10 years, considering the frequency of readings.
WAGO connector – the industry-standard terminal block for quick and secure connections. It shortens the installation time and helps to eliminate mistakes caused by the insufficient wire tightening in the terminal block.
NB-IoT connectivity – now has the coverage almost everywhere, reaching even to the basement levels and SIM cards can be obtained for as little as 1 EUR per year.
Interface for an optical head and configuration through the IEC 62056-21 interface – an industry standard used in the gas meters. This standard allows you to integrate the device directly into your configuration software.
Waterproof enclosure (IP67) for the outdoor installations.
Screws that won't fall out of the cover during installation make the assembly easier and ensure that the IP rating of the converter is not compromised.
Interface for the optical head and configuration via IEC 62056-21 interface - industry standard used in gas meters. This standard allows you to integrate the device directly into your configuration software.
Storage of the historical readings for up to 40 days with the option for the local or remote retrieval.
Why Choose the ACRIOS Systems Converters?
Cyber Resilience Act
We have a full control over each part of the code in our devices. The hardware we produce can be maintained even many years after installation.
Manufactured in the EU
Our converters are manufactured in the Czech Republic with Czech subcontractors. Each unit undergoes final testing while focusing on the functionality of individual communication interfaces and device power consumption.
Total Cost of Ownership
We pay close attention to the TCO - from using a coulomb counter to obtain an accurate battery life to the pre-configured units delivery with your settings.
Resilience Against Outages
The device stores the pulse count and always sends the last 3 values in case of a network outage. Users can also set threshold alarm values, where a message is sent immediately regardless of the set reading interval to detect the sudden measurement anomalies.
FUOTA
For all the NB-IoT devices, we can perform the remote firmware updates via the NB-IoT network. This means you don't need to make any changes to the installation.
With Your SIM Cards
We prioritize privacy and data security—use your own SIM cards and keep sensitive data to yourself. Our part of the puzzle is the hardware and we’re happy to assist with everything else.
Technical Support
Good technical documentation is the foundation of quick integration. On our Wiki, you'll find integration manuals, communication protocol descriptions and videos explaining the usage.
We have a full control over each part of the code in our devices. The hardware we produce can be maintained even many years after installation.
Our converters are manufactured in the Czech Republic with Czech subcontractors. Each unit undergoes final testing while focusing on the functionality of individual communication interfaces and device power consumption.
We pay close attention to the TCO - from using a coulomb counter to obtain an accurate battery life to the pre-configured units delivery with your settings.
The device stores the pulse count and always sends the last 3 values in case of a network outage. Users can also set threshold alarm values, where a message is sent immediately regardless of the set reading interval to detect the sudden measurement anomalies.
For all the NB-IoT devices, we can perform the remote firmware updates via the NB-IoT network. This means you don't need to make any changes to the installation.
We prioritize privacy and data security—use your own SIM cards and keep sensitive data to yourself. Our part of the puzzle is the hardware and we’re happy to assist with everything else.
Good technical documentation is the foundation of quick integration. On our Wiki, you'll find integration manuals, communication protocol descriptions and videos explaining the usage.
What Obstacles Might You Encounter?
If you have ever looked for a solution for meters with a pulse output—such as electricity meters or water meters and their connection within the NB-IoT network, you have probably encountered the following situations:
Possible Issues:
  • Connecting multiple meters (typically 2 to 3) at one location
  • Detection of the cable interruption
  • Atypical installations requiring signal sampling for the status evaluation
  • Using an existing pulse converter for the "dry input" or creating a current loop
  • Setting the meter counter into the converter so that this value is also reported over the network
  • Meters that count two tariffs—high and low—on one output
  • Meters requiring a high sampling frequency
Our Solution

We have resolved all of these issues. We can read any meter with a pulse input within your installation. You can connect up to four devices to our equipment simultaneously.

We are experienced in conducting projects for small businesses as well as large heating plants, aimed to optimize the distribution system and to perform readings in compliance with EED and the ESG regulations. For all the NB-IoT devices, we can perform the remote firmware updates via the NB-IoT network, so the customer doesn't need to make any changes to the installation.

Technical Specifications
  • Options for the DI input, S0 input or the current loop
  • Readings with up to 15-minute intervals
  • Capability of the continuous sampling and sending specific messages based on the signal pattern—typically within the ETCS (European Train Control System) pulse pattern detection
  • Support for meters using two tariffs
  • User-configurable alarm threshold values. If any threshold is exceeded, the sensor immediately sends data to the platform
  • Battery-powered or externally powered versions
  • NB-IoT communication with the ability to use any NB-IoT SIM card
  • Default plug & play configuration
  • Remote configuration capability via the NB-IoT network
  • User-replaceable battery in battery-powered versions
  • SMA standard antenna connector
  • Dimensions: 145 x 90 x 55 mm
  • Weight: 336 g with battery
  • IP Rating: IP67
  • Transmitter Power Supply: D-Cell battery 19,000 mAh, 2x D-Cell batteries 38,000 mAh, or external power supply 85-305V AC
  • Input Parameters: Minimum pulse length: 30 ms, Maximuminput voltage: 24V, Maximum sampling frequency: 33Hz, Open contact resistance:> 200MOhm, Closed contact resistance: <100kOhm, ESD: 16kV
  • Maximum Number of Devices: 4
  • Features: Time synchronization from the network, local history of the unsent frames, pulsepattern detection, detection of 2 metertariffs
  • NB-IoT: 3GPP rel. v.14
  • AUX External Power Supply Option: 3.3V DC
  • Kamstrup Multical 21
  • Diehl Metering Aquarious 120
  • Schneider Electric iEM3000 Series
  • Landis+Gyr E550
  • Elster BK-G4
  • Itron Gallus 2000
  • Kamstrup Multical 602
  • Siemens WFM401
  • Endress+Hauser Proline Promag 50
  • KROHNE OPTIFLUX 4300
  • Siemens Trainguard 200
  • Alstom Atlas 200
  • Thales ETCS L1
  • Bombardier Interflo 450
  • Ansaldo STS (Hitachi Rail) ERTMS L1
  • Sensus iPERL
  • Arad Group Octave
  • Badger Meter E-Series
  • ABB A41 Series
  • GE kV2c
  • Eaton IQ 250/260
  • Honeywell Elster American Meter AL-800
  • Sensus Sonix 2000
  • Schlumberger ACD G10
  • Landis+Gyr Ultraheat T230
  • Danfoss SonoSelect 10
  • Sensus PolluStat
  • Siemens SITRANS F M MAG 8000
  • Yokogawa ADMAG AXF
  • ABB ProcessMaster 300
  • CAF AURIGA ETCS
  • Siemens Eurobalise
  • Alstom Euroloop
  • ACR-CV-101N-I4-D / Pulse input to NB-IoT, battery powered
  • ACR-CV-101N-I4-D2* / Pulse input to NB-IoT, 2xD-cell battery powered
  • ACR-CV-101N-4-EAC / Pulse input to NB-IoT, externally powered

*Under MOQ

  • 1x 4CH pulse input to NB-IoT converter
  • 1x Installation manual
  • 1x Battery (for battery powered units)
  • 1x NB-IoT antenna
  • Selected Projects
    I will be happy to discuss everything with you.
    Lukáš Smetana
    CSO
    Thank you for your inquiry. We will address it as soon as possible.
    Oops! Something went wrong while submitting the form.

    We successfully integrated the ACRIOS Data Concentrator into our smart metering project, seamlessly connecting hundreds of meters. The device’s performance and stability have been outstanding, even in challenging environments. The LoRaWAN protocol used by the concentrator ensures strong, reliable signal coverage, even in hard-to-reach areas. We highly recommend the ACRIOS Data Concentrator to anyone looking to enhance their smart metering infrastructure.

    Iván Martín Díez, Technical Project Manager

    ACRIOS’ reliable products for remote readings and innovative, fully customizable solutions perfectly complement our expertise in value-added distribution of IoT products and solutions. We are proud to collaborate with a company that shares our commitment to excellence and customer satisfaction.

    Ivana Janković Šafarić, CEO

    “We were searching for a way that would allow us to connect existing M-Bus and MODBUS meters to our LoRaWAN network and found the solution provided by ACRIOS valuable for these use cases.“

    Martin Brunner, Head of Supply Chain at Netmore

    ACRIOS was instrumental in our success on a large-scale European deployment of the wM-Bus concentrators, helped to solve all of the technical challenges and deliver results within the set deadlines.

    Lukas Mickus, Project manager

    "The remote gas meter reading devices from ACRIOS have proven their reliability and quality of workmanship. We appreciate that all our technical requirements were met and that we received all the necessary documentation and technical support for integration into our information system. We are very satisfied with the cooperation..“

    Michal Volný, Head of Technical Services

    “The ACRIOS scripting capabilities have provided Netmore with the required solution for solving integrations with MBUS/MODBUS units.”

    Jimmy Björklund, Lead Solution Architect at Netmore

    We offer the ACRIOS remote reading solutions to all of our customers who want to comply with the EED decree. The solution is quick to install, requires no training and proves to be stable over time.

    Jaroslav Brzokoupil, CEO