In addition to the products available in our portfolio, we design and manufacture devices that our customers demand.

The layout and design of PCBs allow maximum flexibility to add new ports, add extension boards, and integrate different chipsets/modules. In some cases, even the housing of our devices is specifically designed to meet customer standards.


The experience our engineers have collected over the last two decades in working with different embedded microprocessors and microcontrollers is truly invaluable when it comes to firmware development.

Our developers are trained to use IoT secure coding best practices.


Our OpenWrt-based operating system allows our customers to develop their own applications in order to provide industry-specific or edge computing functionalities.

We also offer software for device management.



Retrofit 4G smart meter modems for 2G migration

As telcos are getting prepared for 5G shutting down 2G and 3G networks all around the world, one of the biggest challenges of the IoT world becomes how to migrate the obsolete 2G/GPRS and 3G communication devices to the latest 4G LTE technology? 4G LTE IoT devices are considered future-proof, as LTE-M and NB-IoT devices are expected to work with 5G networks using the non-standalone (NSA) architecture.

Our 4G LTE smart modems provide a future-proof migration path to the higher speed LTE network with the same functionality. We offer our 4G devices with the same outfit, and 2G fallback compatibility for retrofit purposes.

The modem forms part of the AMI (Advanced Metering Infrastructure) of a public utility company. It is suitable for remote meter readout, meter data download, and remote configuration for provider’s schedule or on-demand requests.

Our smart metering modems are fully compatible with the most popular electricity meters (Landis, Itron, Elster/Honeywell, EMH, SAPHIR, PME-PMI), designed to fit under the terminal covers, and addresses all technical requirements of manufacturers.



NB-IoT Devices: modems, routers, DCUs, gateways

Narrowband-IoT (and LTE Cat.1, LTE Cat.M, and Cat.M 1) are a fast-growing industrial Low Power Wide-Area Network (LPWAN) technology classified as a 5G technology, and very well suited for applications that require small data transfers over a long period of time. Low amounts of transferred data results in lower operation costs. Some NB-IoT devices are designed to consume significantly less power resulting in a significantly longer battery life (10 years), which alllows for autonomous operation in remote locations with limited access power sources.

4G LTE IoT devices are considered future-proof, as LTE-M and NB-IoT devices are expected to work with 5G networks using the non-standalone (NSA) architecture.

Advantages of NB-IoT:

  • Great indoor coverage
  • Support for a huge number of connections
  • Extended battery life
  • Reasonable price

WM Systems has years of experience in developing NB-IoT devices (routers, industrial modems) and smart metering modems). We offer a wide range of M2M product for this cellular network: smart meter modems, routers, transmitters



High-quality IoT and IIoT routers for industrial applications.

These devices are able to manage and control complex connected environments by aggregating and transmitting sensor data, as well as translating communication protocols serving as a bridge between IoT devices and platforms.

Our multi-protocol industrial gateways can be used in many different verticals such as smart grids, building or factory automations, fleet management, security systems, etc., but some are designed for specific applications such as substation management.

There is a growing trend in industrial IoT towards the edge as is the case in many technologies. Our Linux-based routers offer the possibility of fog computing functionalities, as users can develop their own apps to run on them.



Data concentrators (or DCUs) have an important role in a variety of Industrial Internet of Things (IIoT) applications. They collect and aggregate data from multiple industrial devices which can be sent to central management systems.

A data concentrator is the backbone of modern Automated Metering Infrastructures (or AMI) and industrial automation projects. Our multi-protocol data concentrator units (DCU) are capable of collecting data from industrial systems through RS485/ModBus RTU or Modbus TCP/IP as well as from sensors through multiple I/O interfaces. Data transmission can be done by a connected router/modem through wired RS485 connection or wireless mobile network (LTE / Narrow Band). A single DCU + a router/modem can be a very cost-effective solution for monitoring up to 32 industrial devices (electricity/water/gas meters, sensors, etc. ).

Our data concentrators can be connected to all kinds of industrial equipment. We offer customization of our products making it possible for our clients to use them with a combination of IT and OT protocols.



Rugged cellular modem for Industrial IoT applications offering the latest, future-proof connectivity. It can be ordered with NB-IoT, LTE Cat-M1 and is backwards compatible with EGPRS (2G). 

Offering an extremely long lifetime and easy deployment, it is the perfect upgrade for your existing 2G/3G modems.

Our Modbus TCP modems provide transparent RS485 Modbus communication with various  industrial IoT applications like vending machines, smart metering,factory or building automation, and more.

The PLC connected external devices are ideal and cost-effective choices for an industrial system. It is the perfect solution for monitoring transparent or Modbus TCP/RTU communication.

This universal, independent device can be attached to any RS485 MODBUS device externally.



Smart Metering Modems offer remote meter readout via CDMA 450 / 2G / 3G / 4G / LTE Cat.M / Cat.NB cellular networks. Upgrade your modem from 2G/3G to 4G LTE!

The heart of any remote meter reading solution is a modem that reads consumption data from the meters and sends it to a central server.

Our smart meter modems are designed specifically to be fully compatible with the electric meters of flagship manufacturers (Elster, Honeywell, Itrón, Landis+Gyr, PME-PMI, SAPHIR).

The hardware design and software satisfies the manufacturer’s requirements, the cases are designed to fit under the terminal covers, the power consumption of the modem is optimized for the specific meter etc. Smart electricity metering has never been so easy! Our modems can be integrated into any AMR/AMI solution easily.

WM System has supplied more the 100k modems to the biggest utilities around the world to support their smart grid initiatives.

We offer modems for electricity and water metering.

Product customization is available for our clients. Need a special protocol or port? Contact us!



Consumption water metering: Automated remote Meter Readout by pulse signal counters with NB-IoT data transmitting capability

The heart of any remote meter reading solution is a modem that collects, counts the incoming consumption pulse signals from the connected meters and sends the consumption data it to a central server.

Our smart water meter modems are designed specifically to be fully compatible with the pulse-capable water meters of flagship manufacturers.

The devices have battery powered, long-life, independent operation with security features.

Smart water metering has never been so easy! Our devices can be integrated into any AMR/AMI solution.



The remote management and maintenance of an IIoT solution can be a real challenge.

Improve the network availability and operational efficiency of your fleet!



Remote Control Solutions for Public Street Lighting

The option to remotely control public lighting systems is extremely beneficial. Besides providing better lighting service to citizens, it allows operators to optimize maintenance and energy costs.

Our products allow the automated remote control of a public street lighting system by on-demand operation, scheduled switching, or manual control, On/Off power dimming, and sophisticated programming.

We offer products that, when installed inside the existing feeder pillar cabinets, can control street lights by controlling the supplied power to the street light power cable(s).  The lights can also be dimmed by lowering the supply voltage. The groups of street lights can be controlled according to reference light sensor(s), by clock and calendar, or manually through a management platform.

Operate the lighting system by remote relay control of the street lamps through the switching cabinet. Configure, manage, and monitor your lamps groups from the head-end (HES) center. Features include monitoring, supervision, and reports.



Control and Management Systems for Public Lighting & Solar Farms

Smart cities begin with smart lighting, a complete automation of the public lighting system, and a precious power grid.

Our products allow full remote control of public street lighting by on-demand operation or automatized switching. Configure, manage, and monitor your devices from the head-end (HES) center. Monitoring features include checking communication health of devices through quality of service (QoS). A remote solution to maintain systems and services – manage the operation and outages.

Important solution for smart city / smart lighting deployments. It allows remote management, full control, and supervision of public lighting networks. Take control of your lighting infrastructure!

Our products can also be used to monitor and control solar power plants. Managers need to collect data from and monitor multiple devices at remote locations to maximize energy efficiency.



GSM Transmitter for Security Alarms, Video surveillance

The speed and reliability of alarm signal transmission are critical for security systems.

Our cellular alarm communicator uses the GSM / GPRS / 3G / 4G networks to send alarm signals to dispatch centers. There is universal compatibility with millions of wired and wireless alarm panels.

Upgrade the communication of your customer’s legacy security system’s to the latest 4G LTE technology without having to change only the signal transmitters, while keeping all other components.

The two inputs of our device can be used for security system monitoring and sabotage detection (wire cut). In case of status changes, our device generates immediate alarms and quickly transmits the signals – in standard Contact ID format (CID codes) – through the mobile network to the IP address of the dispatching center. Periodical life signals are provided at the configured intervals. Safety features, input monitoring, remote control, gate opening, IO expansion.

Our routers are widely used by industry professionals to connect IP cameras, NVRs (network video recorders), and DVRs (digital video recorders).



Product accessories, antenna and expansions

You can select and order accessories to your devices.

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