Authors: Paula Ortega and Nacho Facerías, FAE and IoT Communications Product Manager at Eurotronix
Internet of Things: Much More Than a Trendy Concept
Just a decade ago, talking about the Internet of Things (IoT) seemed like an experimental technology, still far from everyday use. Today, however, the IoT is an invisible infrastructure that underpins a large part of industrial, urban, and domestic activity. It is estimated that by 2026, more than 20.000 billion connected devices will coexist on the planet, from temperature sensors in a logistics warehouse to wristbands that monitor cardiovascular health. The IoT is a reality: it is the data layer upon which business decisions, energy efficiency, and personal safety are being built.
The IoT consists of providing connectivity and intelligence to everyday objects—machines, vehicles, appliances, industrial assets—so that they can capture data from their environment, communicate it, and, in many cases, act autonomously. What began as RFID tags for inventory control has evolved into complex ecosystems where sensors, gateways (gateways), communication networks and cloud platforms work in a coordinated manner to generate value in real time.
An evolution accelerated by the need for data
The evolution of IoT has been marked by three major leaps. The first was the miniaturization of sensors and microcontrollers, which allowed measurement capabilities to be integrated into virtually any object at an affordable cost. The second was the emergence of low-power communication networks designed specifically for devices that need to transmit little data, but do so for years on a single battery: LTE CAT1.BIS, LTE-M, LoRa, and Sigfox are examples of this generation of technologies. The third leap, the one we are experiencing now, is the convergence between IoT, artificial intelligence, and edge computing.edge computing), which allows the devices themselves to analyze data locally and make decisions without constantly relying on the cloud.
This journey has transformed entire sectors. Industry has moved from corrective to predictive maintenance thanks to sensors that detect vibrations or abnormal temperatures before a machine fails. Agriculture uses moisture probes and connected weather stations to optimize irrigation. Cities are deploying traffic sensors, air quality monitors, and smart lighting systems to reduce their energy footprint. And in the healthcare sector, devices w They allow continuous monitoring of patients outside the hospital.
Architecture: the four layers that make IoT possible
Every IoT system, regardless of its application, is based on four layers. perception layer It consists of the sensors and actuators that capture physical quantities—temperature, pressure, movement, location—and convert them into digital data. connectivity layer It is responsible for transporting that information using short- or long-range protocols. processing layerDivided between the device itself and cloud servers, it filters, aggregates, and analyzes the data. And the application layer translate that information into dashboards, alerts, or automated actions that make sense for the business.
Diagram 1. Source: Eurotronix
Choosing the right connectivity technology at layer two is probably the most critical design decision in any IoT project, as it determines energy consumption, range, cost, and the amount of data that can be transmitted.
Communication protocols: there is no single solution
One of the key lessons learned in the IoT industry is that there is no single universal protocol, but rather a range of technologies that must be chosen according to the specific use case. For short-range communications within a single space, BLE (Bluetooth Low Energy) or Wi-Fi remain the standard due to their low power consumption and sufficient bandwidth. For short-range asset identification and traceability, RFID continues to be indispensable, while UWB (Ultra-Wideband) is gaining ground in applications requiring extremely high-precision geolocation, such as asset tracking within an industrial plant.
When the requirement is to cover large distances with minimal energy consumption, LPWAN networks come into play: CAT1.BIS and LTE-M operate over existing cellular infrastructure and offer coverage guaranteed by operators, while LoRa allows the deployment of private networks without depending on third parties, something especially valued in industrial or agricultural environments far from urban coverage.
The major challenge that remains: security
As the number of connected devices grows, so does the attack surface. Many IoT projects are launched prioritizing functionality and cost, leaving security as an afterthought, when it should be part of the design from the outset. The main risks include unchanged default credentials, outdated firmware, unencrypted communications, and poor management of cryptographic keys on resource-constrained devices.
In response, the industry is moving towards practices such as safe startup (secure boot), digitally signed over-the-air (OTA) firmware updates, end-to-end encryption, and mutual authentication between device and platform. Security is no longer an optional extra: it's a design requirement as important as power consumption or signal range.
From the lab to the plant: real-world applications
IoT use cases are multiplying across virtually every sector. In logistics, real-time tracking of goods using GPS and temperature sensors ensures the cold chain for pharmaceutical and food products. In smart buildings, the combination of occupancy sensors, connected climate control, and adaptive lighting reduces energy consumption by up to 30%. In access control, RFID-based systems have replaced traditional cards with more flexible and auditable solutions. And in industrial maintenance, vibration sensors connected via LoRa or mesh networks allow for the early detection of malfunctions before a production stoppage occurs.
Conclusion: IoT as a competitive advantage
The Internet of Things has moved beyond a technological trend to become a driver of competitiveness. Companies that can reliably and securely capture, transmit, and analyze data from their environment make better decisions, reduce operating costs, and offer new services to their customers. The challenge is no longer proving that IoT works, but rather choosing the right combination of sensors, protocols, and platforms for each specific project.
Eurotronix: the technology partner for your IoT project
At Eurotronix, we support manufacturers and integrators at each of the layers described in this article, offering a complete catalog of IoT modules and solutions from leading international manufacturers:
- Low-power cellular connectivity (CAT1.BIS / LTE-M): Ready-to-integrate modules that guarantee coverage and reliability in remote applications, from smart meters to asset tracking, with Fibocom and Cavli as reference manufacturers.
- Bluetooth Low Energy (BLE) and Wi-Fi: Compact solutions for wearables, access control and interior automation, with CE/RoHS certification, from AiThinker and Ebyte.
- LoRa and LoraWan: Modules from manufacturers HopeRF, Ebyte, Ai Thinker to deploy long-range private networks in industrial, agricultural or rural environments, without depending on third-party infrastructure.
- RFID: identification, traceability and access control among others, with the Elatec range of readers as a key component.
- Long-range mesh networks: With NeoCortec and its NeoMesh technology, thousands of sensors operate on battery power, without repeaters or additional infrastructure.
Our team of Field Application Engineers and Product Managers works hand in hand with each client to select the right module, resolve integration questions, and support the project from prototype to serial production.
Do you have an IoT project in mind? Contact our technical team and we'll help you find the connectivity solution that best suits your needs.
For more information: Visit the Eurotronix website
