LoRa, Zigbee, 4G, or Wi-Fi: Which IoT Protocol Should You Choose for Your Industrial Project?

· 13 min read
13 min read
Eziwan Team
Eziwan Team
IoT Infrastructure

Choosing a wireless communication protocol is one of the most important decisions in an industrial IoT project. LoRaWAN, Zigbee, 4G LTE, or Wi-Fi: each technology has its strengths, weaknesses, and ideal use cases. Choosing the wrong technology can make your deployment impossible to scale, too expensive to operate, or insufficiently reliable for your industrial environment.

This guide compares the four main wireless technologies used in industrial IoT in France, with practical recommendations for each use case.

Overview: 4 Technologies for 4 Different Needs​

Before getting into the details, here’s the gist in one sentence for each technology:

  • LoRaWAN: for low-power, battery-powered sensors in open environments over long distances (1 to 15 km)
  • Zigbee: for dense indoor sensor networks with mesh topologies over short distances (10 to 100 m)
  • 4G LTE: for remote locations, critical equipment, long-distance WAN connections, and high-speed internet
  • Wi-Fi: for locations with existing network infrastructure, mobile devices in covered areas, and local high-speed internet

Detailed Technical Comparison​

CriterionLoRaWANZigbee4G LTEWi-Fi 802.11n/ac
Range1–15 km (rural) / 0.5–3 km (urban)10–100 m (mesh up to 300 m)0.5–30 km30–150 m
Data Rate250 bps to 50 Kbps20–250 Kbps5–100 Mbps50–1000 Mbps
Latency1–10 s10–30 ms30–100 ms1–10 ms
Power consumptionVery low (µA in standby)Low (µA–mA)Medium (mA–W)High (W)
Battery life5–15 years1–5 years6–24 monthsDays to weeks
Infrastructure costLow (LoRa hub)Medium (coordinator + mesh)Low (M2M SIM)High (AP + switches)
Cost per node10–80 €20–150 €100–500 €50–300 €
Frequency868 MHz (EU)2.4 GHz700/800/1800/2600 MHz2.4 / 5 GHz
Native securityAES-128AES-1283GPP (TLS, SIM)WPA3
StandardizationLoRa AllianceZigbee Alliance (CSA)3GPPIEEE 802.11
TopologyStar (via hub)MeshPoint-to-point (via mobile network)Star (via AP)
Number of nodes per gateway/AP2,000 to 10,00065,000 (Zigbee 3.0)N/A (carrier network)30–100 active clients

LoRaWAN in Detail​

When to Use It​

LoRaWAN is ideal for scenarios where you need very long ranges and very low power consumption, but where the data rate is low (a few bytes per message every few minutes to hours).

Ideal industrial use cases for LoRa:

  • Water, gas, and electricity meter reading in urban and suburban areas
  • Monitoring environmental conditions over large areas (temperature, humidity, CO₂ in multiple buildings)
  • Asset tracking using long-life GPS/motion sensors (pallets, mobile tanks)
  • Monitoring of sensors in hard-to-reach areas (sewers, underground infrastructure, rural areas)
  • Opening/closing detection (hatches, silo doors) over large areas

LoRaWAN Advantages:

  • Exceptional battery life (5 to 10 years on an AA battery)
  • Very simple infrastructure: a LoRa hub covers a radius of 5 to 15 km in rural areas
  • Public networks available in France (Bouygues Telecom LoRa, Objenious, Sewan, CityMesh)
  • Very low cost per node (€10 to €50 for a single sensor)

LoRaWAN Limitations:

  • Very low data rate: cannot send images, video streams, or more than a few bytes per message
  • High latency: the downlink (cloud → sensor) can take 5 to 10 seconds — not suitable for real-time control
  • Regulatory limitations: the 868 MHz band is limited to a 1% duty cycle (approximately 36 seconds of transmission per hour) — this restricts the frequency of transmissions
  • In dense indoor environments (thick concrete, basements), the range drops to a few dozen meters

Typical Industrial LoRa Architecture:

Zigbee in Detail​

When to Use It​

Zigbee is ideal for dense indoor sensor networks with short ranges, particularly in buildings (smart buildings) and factories where distances are short but the number of nodes is high.

Ideal Industrial Use Cases for Zigbee:

  • Building Automation Systems (BAS): lighting, blinds, HVAC
  • Monitoring of environmental conditions in high-density environments (warehouses, cleanrooms)
  • Networks of occupancy sensors, door sensors, and zone-based energy meters
  • Light industrial automation as a replacement for wired systems in commercial buildings

Zigbee Advantages:

  • Mesh architecture: Zigbee nodes relay data from distant nodes, eliminating dead zones
  • Low battery consumption (1 to 5 years)
  • Large ecosystem of standardized and interoperable sensors (Matter standard since 2022)
  • Sufficient data rate for real-time measurements (alarms, status updates)
  • Very high node density (thousands on a single network)

Zigbee Limitations:

  • Limited range: 10 to 100 m per hop (mesh networks compensate for this, but require a sufficient number of intermediate nodes)
  • Coordination required: every Zigbee network requires a coordinator (Zigbee hub or gateway)
  • 2.4 GHz = interference with Wi-Fi, Bluetooth, and microwave ovens in dense industrial environments
  • Not suitable for long-distance connections between distant buildings

4G LTE in Detail​

When to Use It​

4G LTE is the technology of choice for long-distance WAN connections, remote sites without network infrastructure, and applications requiring sufficient bandwidth for monitoring and remote access.

Ideal industrial use cases for 4G:

  • Remote sites (pumping stations, cabins, antennas, weather sensors) without a wired connection
  • Backup connection for critical industrial sites (fiber-to-4G failover)
  • IoT gateways that transmit field data to the cloud (Modbus monitoring, OPC-UA)
  • Remote VPN access for remote maintenance of industrial equipment
  • Vehicles and mobile equipment (refrigerated trucks, construction machinery)
  • Rapid deployments where installing a network cable is impossible or too costly

Benefits of Industrial 4G LTE:

  • Nationwide coverage: 99.2% of French municipalities (including remote rural and industrial areas)
  • Sufficient bandwidth: 5 to 50 Mbps is more than enough for monitoring and remote maintenance
  • No local infrastructure: no cabling, no switches, no access points to maintain
  • Dual SIM: automatic switching between carriers to maximize availability
  • Plug-and-play: an industrial 4G gateway is up and running in less than an hour

4G LTE Limitations:

  • Higher cost per node: a 4G industrial gateway costs €300 to €600; a SIM subscription costs €10 to €20 per month
  • Power consumption: requires a mains power supply (not suitable for battery-powered sensors)
  • Latency: 30 to 100 ms (acceptable for monitoring, but not for demanding real-time control)
  • Dead zones: some very remote rural areas with no coverage (can be mitigated with an external antenna or satellite)
  • Dependence on the carrier: availability depends on the mobile network (acceptable with dual-SIM)

Wi-Fi in Detail​

When to Use It​

Wi-Fi is suitable for sites with existing network infrastructure, devices requiring high-speed connectivity, and areas with full coverage from access points.

Ideal Industrial Use Cases for Wi-Fi:

  • Connecting sensors or industrial equipment in a factory with existing Wi-Fi coverage
  • On-site vehicles or mobile equipment (forklifts, AGVs) in areas with Wi-Fi coverage
  • IP surveillance cameras (requires high-speed Wi-Fi)
  • Local SCADA in real-time monitoring mode (latency < 10 ms)

Benefits of Industrial Wi-Fi:

  • Very high data rates (supports video streaming and fast firmware updates)
  • Infrastructure often already in place in modern factories
  • Very low latency (1 to 10 ms) — suitable for moderate real-time applications
  • Many industrial devices with built-in Wi-Fi (HMIs, collaborative robots)

Limitations of Industrial Wi-Fi:

  • Limited range: 30 to 150 m per access point (AP); requires a mesh network to cover large areas
  • Interference: The 2.4 GHz band is congested in dense industrial environments (motors, radio frequencies, CNC machines)
  • High power consumption: not suitable for battery-powered sensors
  • Expensive infrastructure: industrial access points (Cisco, Aruba, Extreme Networks) = €500 to €3,000 per AP
  • Complex network management: roaming for mobile devices requires Wi-Fi expertise

Decision Guide: How to Choose?​

Decision Tree​

Recommendation Table by Sector​

SectorPrimary RecommendationSecondaryAvoid
Water/Sewage (remote facilities)4G LTELoRaWAN (meters)Wi-Fi
Water/Sewage (urban network)LoRaWAN4G LTE—
Renewable Energy (rural farms)4G LTELoRaWAN (weather)Wi-Fi
Manufacturing (indoor factory)Wi-Fi / 4GZigbeeLoRaWAN
Warehouse logisticsWi-Fi / Zigbee4G LTELoRaWAN
Agriculture (rural farms)4G LTELoRaWANWi-Fi
Smart buildings (commercial)Zigbee / Wi-FiLoRaWAN4G LTE
Remote maintenance (remote access)4G LTE—LoRaWAN, Zigbee

Hybrid Architecture: The Best of Both Worlds​

In practice, mature industrial IoT deployments use a combination of technologies, selected based on the nature of each piece of equipment.

Example of a hybrid architecture: a 10-hectare industrial site

The Eziwan gateway acts as a multiprotocol hub: it communicates via Modbus on the local OT network, is compatible with LoRa and Zigbee hubs for wireless sensors, and transmits all data to the cloud via 4G LTE. One subscription, one dashboard.

5-Year Cost Comparison (Deployment of 100 Sensors)​

CriterionLoRaWAN (public network)Zigbee (private network)4G LTEIndustrial Wi-Fi
Hardware per node30–60 €50–120 €300–500 €100–250 €
Infrastructure0 € (public network)500–2,000 € (hub)0 €3,000–15,000 € (APs)
Subscription per node/year5–15 €0 €120–240 €0 €
Total hardware for 100 nodes3,000–6,000 €5,000–14,000 €30,000–50,000 €10,000–25,000 €
Total 5-year subscription2,500–7,500 €0 €60,000–120,000 €0 €
5-year TCO (100 nodes)€5,500–13,500€5,000–14,000€90,000–170,000€13,000–40,000

Note: 4G LTE is significantly more expensive per node, but provides long-distance WAN connectivity that LoRa and Zigbee cannot offer. This comparison applies only to data-collection sensors, not to industrial gateways that must provide an internet connection.

Conclusion​

There is no single "best" universal IoT technology. The choice depends on three fundamental criteria:

  1. Range: short (Zigbee), medium-to-long (LoRaWAN), very long or WAN (4G LTE)
  2. Power consumption: long-lasting battery life (LoRaWAN > Zigbee > Wi-Fi), AC power (all)
  3. Data rate: sensor data (LoRaWAN and Zigbee are sufficient), monitoring and remote access (4G LTE and Wi-Fi required)

The Eziwan solution is optimized for 4G LTE as an industrial WAN connection technology, as it is best suited for gateways that need to connect local OT networks (Modbus, OPC-UA) to the monitoring cloud. It can be supplemented with LoRaWAN or Zigbee concentrators for low-power sensors.

Need help choosing the right architecture for your project? Contact our team of engineers for a free assessment of your situation.

FAQ​

Can LoRaWAN and 4G LTE be combined at the same site? Yes—it’s even recommended. Battery-powered LoRaWAN sensors (water meters, environmental probes, level sensors) transmit data via a LoRa hub. The Eziwan 4G LTE gateway consolidates data from local LoRa sensors and Modbus devices and sends it to the cloud. 4G is used only for the WAN connection, not for each individual sensor.

Is LoRaWAN reliable for critical industrial monitoring? LoRaWAN is suitable for non-critical monitoring (meter readings, environmental data, presence detection). For critical monitoring (pump alarms, process values), 4G LTE is preferable due to its low latency and reliability. The two protocols often coexist: LoRaWAN for auxiliary sensors, and 4G for critical PLCs and HMIs.

What is the difference between LoRa and LoRaWAN? LoRa is the radio technology (Semtech's CSS modulation). LoRaWAN is the network protocol based on LoRa: it defines the network architecture (nodes → concentrators → Network Server → Application Server), address management, security (AES-128), and device classes (A, B, C). LoRa without LoRaWAN can operate in a proprietary point-to-point mode—which is less interoperable.

Can Zigbee be used in an industrial environment with electromagnetic interference? Zigbee (2.4 GHz) is sensitive to industrial radio interference (motors, variable-speed drives, welding). In highly disrupted environments, prioritize Zigbee channels at 915 MHz (available in a sub-GHz version) or use wired connections (RS-485 Modbus) for the most critical equipment. The Zigbee mesh network improves resilience but does not eliminate physical limitations.

Is industrial Wi-Fi suitable for moving machinery (AGVs, conveyors)? Wi-Fi with 802.11r roaming (Fast Transition) is used for AGVs (automated guided vehicles) and conveyors. A network of access points covering the entire route enables rapid handover (<50 ms) between APs. This deployment is more complex and costly than a fixed network, but it is the standard solution for moving machines in indoor environments.

Further Reading​

Eziwan specializes in 4G LTE industrial IoT connectivity. Our multi-protocol gateway (Modbus, OPC-UA, MQTT, LoRaWAN, Zigbee) integrates seamlessly with your existing architecture. Learn more about the Eziwan gateway →

Additional Resources​