IoT Connectivity for Your Monitoring Systems
Leverage top-of-line communications coverage and work with minimum downtimes to deploy robust, secure and reliable communication networks for your monitoring projects.
Built for Reliable Field Connectivity
From underground mining tunnels to exposed bridge decks — our communications portfolio delivers consistent, secure, and scalable IoT connectivity wherever your monitoring network needs to reach.
Comprehensive Connectivity
Narrowband and broadband gateways covering all IoT connectivity requirements — from low-packet-rate sensors to data-intensive monitoring systems.
devices into a single gateway network
Unparalleled radio coverage
Narrowband communications reaching up to 15 km in open terrain. Extend coverage further underground or through obstacles using K20 Edge Repeaters — purpose-built for tunnels, mines and dense urban environments.
Minimum Deployment Times
Easy configuration and installation with multiple troubleshooting options — deploy a complete network in hours, not days.
Expert Support
IoT remote monitoring specialists available for deployment assistance, configuration guidance and ongoing technical support for every project.
Mobile App Support
Step-by-step setup wizard, radio signal coverage testing and data sampling — all via the Sentra mobile app without needing a laptop on site.
Cloud & Local Configs
Private isolated local deployments or multi-network cloud management — choose the architecture that fits your project's security and compliance needs.
What Makes Our Communications Different
Field-proven IoT connectivity technology designed for geotechnical, structural and environmental monitoring projects of any scale.
Long-Range Narrowband
LoRaWAN communications reaching up to 15 km in open terrain. Ideal for large-scale outdoor monitoring across bridges, dams, slopes and remote infrastructure where cellular coverage is limited.
4G Broadband Option
Thread X3 provides broadband 4G communications for convenient connect-and-collect operations — perfect for temporary deployments, data-intensive sensors or urban monitoring sites with cellular coverage.
Underground Repeaters
K20 Edge Repeater extends communication into tunnels, mines and challenging terrain where direct gateway signals cannot penetrate — maintaining full network visibility underground.
Secure & Compliant
Industry-standard security and data privacy compliance built in. Private isolated networks or multi-network cloud deployments both meet enterprise-grade security requirements.
High Scalability
A single gateway network reliably supports 1000+ wireless devices simultaneously — from a handful of sensors on a single bridge to city-wide monitoring networks with hundreds of nodes.
Flexible Network Modes
Multiple network configurations support both data-intensive systems and low-packet-rate sensors — one platform adapts to any monitoring requirement without additional hardware.
Where Our Communications Deploy
Sentra Core Communications are field-proven for geotechnical, structural and environmental monitoring across surface and underground environments.
Mining Operations
Reliable underground and surface communications for slope stability, seismic and groundwater monitoring across open-pit and underground mines.
Transport & Bridges
Long-range gateway networks covering road and rail corridors — continuous sensor data from bridge decks, tunnels and retaining structures.
Construction Sites
Temporary and permanent deployments for settlement, vibration and ground movement monitoring throughout the construction lifecycle.
Geotechnical Slopes
Wireless sensor networks across remote terrain — landslide early warning, slope stability and rainfall monitoring without cellular coverage dependency.
Dam & Reservoir
Wide-area gateway coverage for large embankment and concrete dam instrumentation networks — piezometers, tiltmeters and GNSS in a single network.
Environmental Monitoring
Flood early warning systems, weather kits and environmental sensor arrays connected over long-range narrowband with minimal infrastructure.
200+
Satisfied Clients
Don't Trust Us, Trust Their Voice
Discover how your projects achieve maximum visual impact with Sentra's expert SHM solutions.
Bridge Monitoring Division
"Sentra's SHM, fatigue life assessment, and BridgePulse AI have given us unprecedented visibility into our critical rail bridges. The predictive analytics alone helped us prevent multiple potential failures."
Capital City Development
"Sentra delivered a comprehensive digital twin for our entire capital city. This has revolutionised how we plan, monitor, and manage urban infrastructure at scale."
Technology Infrastructure
"The digital twin and facility management solution from Sentra has revolutionised how we manage our technology infrastructure. Real-time insights have dramatically improved our operational efficiency."
Digital Operations
"Sentra's website management and maintenance services have been exceptional. Our online presence has never been more robust and user-friendly."
Infrastructure Division
"The BIM digital twin combined with Sentra's structural health monitoring has given us complete visibility into our railway infrastructure. We can now predict issues before they occur."
Bridge & Structures Division
"Sentra's SHM, fatigue life assessment, and BridgePulse AI have given us unprecedented visibility into our critical rail bridges. This partnership has elevated our safety standards."
Got Questions About Core Communications?
Can't find what you're looking for? Contact our team — we're happy to help.
Narrowband gateways achieve wireless communication ranges of up to 15 km in open terrain using LoRaWAN technology. Actual range depends on terrain, obstacles and local radio regulations. Repeaters extend coverage into underground environments, tunnels and dense urban areas.
A single Sentra gateway network can support 1000+ wireless edge devices simultaneously. This makes our communications platform ideal for large-scale instrumentation networks — from city-wide bridge monitoring to full dam instrumentation programmes with hundreds of sensors.
Our portfolio covers narrowband LoRaWAN (up to 15 km) and broadband 4G LTE (Thread X3). Narrowband is ideal for large sensor networks with low data rates. Broadband suits data-intensive sensors or temporary connect-and-collect deployments. Both integrate with the same cloud and edge management platforms.
Yes. The K20 Edge Repeater is purpose-built to extend network coverage underground — into mining tunnels, metro infrastructure and any environment where direct gateway signals cannot penetrate. Repeater chains can be configured to maintain full connectivity across long underground corridors.
Both. The 4G Rugged Gateway Edge supports private, isolated local deployments (CMT Edge) where data stays on-site — ideal for high-security or connectivity-restricted environments. The 4G Rugged Gateway Cloud connects to multi-network cloud management (CMT Cloud) for centralised remote oversight of multiple sites.
Gateways are configured via the Sentra mobile app using a step-by-step setup wizard. The app also includes radio signal coverage testing (online and offline) to assess network quality before finalising device placement. Our IoT specialists provide in-field support for complex deployments.