Remote Monitoring in Locations Without Reliable Connectivity
Remote monitoring becomes particularly challenging in locations with no reliable fixed network infrastructure — remote water treatment sites, mountain weather stations, offshore platforms or agricultural land. Multi-communication IoT devices solve this by combining several radio technologies in one unit, automatically selecting the best available connection at any moment.
What Is a Multi-Comm IoT Device?
A multi-comm device integrates two or more communication interfaces — typically a combination of 4G/LTE, NB-IoT, LoRaWAN and sometimes satellite (such as Iridium or Orbcomm). The device selects the available interface based on signal quality and priority rules, ensuring that measurement data reaches Sensor-Online even in locations where any single network might be unavailable.
Common configurations include:
- 4G primary + NB-IoT fallback — suitable for sites with mobile coverage but variable signal quality
- LoRaWAN primary + 4G fallback — for deployments within range of a private LoRaWAN gateway but needing backup public network connectivity
- 4G primary + satellite fallback — for truly remote locations where even 4G coverage is unreliable or absent
Typical Use Cases for Multi-Comm Monitoring
- Water and wastewater infrastructure — pump stations and wells in rural areas where 4G coverage is marginal and uptime requirements are high
- Weather monitoring stations — deployed in forests, mountain terrain or coastal environments for hydrology, agriculture or climate research
- Groundwater monitoring — long-duration deployments in wells where site visits are expensive and infrequent
- Mining and geotechnical monitoring — sensors on slopes, tailings dams or deep underground where wired infrastructure is impractical
- Agricultural IoT — soil moisture, irrigation control and microclimate monitoring across large land areas
EWS Multi-Comm Devices and Sensor-Online
EWS (Early Warning System) multi-comm devices are designed for exactly these challenging environments. They combine compact, weatherproof hardware with the ability to log data locally during connectivity outages and push the stored buffer to Sensor-Online once the connection is restored. This ensures no data is lost even during extended network interruptions.
All EWS devices supported by Sensor-Online use the platform’s standard device type library for automatic payload decoding — no custom configuration required to get measurements into dashboards and alarms.
Solar and Battery Power for Remote Sites
Multi-comm IoT deployments in remote locations almost always require off-grid power. Sensor-Online tracks battery voltage and solar charge status as separate data channels, enabling proactive battery replacement or solar panel maintenance before a site goes dark.
Typical power configurations for remote monitoring:
- Primary lithium battery + small solar panel for 1–5 year autonomous operation
- Solar panel + LiFePO₄ battery pack for continuous operation in locations with adequate solar irradiation
- External power (where available) with battery backup
FAQ: Multi-Comm Remote Monitoring
What happens to data if the network connection is lost?
Most multi-comm devices include local flash memory to buffer readings during connectivity outages. When the connection is restored, the device uploads the stored data to Sensor-Online, which accepts and timestamps historical backfills correctly.
Can Sensor-Online alert when a remote device stops communicating?
Yes. Sensor-Online has a configurable heartbeat alarm — if a device does not send a message within a defined time window, an alert is triggered via SMS, email or webhook. This covers both sensor failure and network outage scenarios.
Is satellite connectivity supported in Sensor-Online?
Yes, as long as the satellite modem delivers data via a supported protocol (typically HTTP/MQTT). The platform receives and processes the data identically regardless of the underlying transport.
Explore Sensor-Online’s sensor catalogue or learn more about remote industrial IoT solutions.
