Extend Sensor Connectivity for Continuous Monitoring
Sentra delivers advanced K20 Edge Repeaters designed to expand the range and reliability of your remote sensor networks. By combining robust wireless communication, edge intelligence, and seamless integration with gateways and cloud platforms, our repeaters ensure uninterrupted data flow from field sensors to your monitoring dashboards, enabling faster and safer infrastructure decisions.
K20 Edge Repeater
Boosts signal reach to connect remote nodes
Uninterrupted transmission between sensors and gateways over long distances
Optimized energy consumption for years
Compact, weatherproof design for quick installation
Overview
The Sentra K20 Edge Repeater strengthens wireless sensor networks by boosting signal reach and maintaining continuous communication between sensors and gateways. Ideal for challenging terrains, tunnels, or extended infrastructure projects, it ensures that critical tilt, vibration, and GNSS data is transmitted reliably. With built-in edge processing, the repeater can manage event-based triggers and locally buffer data when network connectivity is temporarily unavailable.
What's Included
Field-ready hardware and services to expand and stabilize your sensor networks.
- K20 Edge Repeater with IP65 rugged housing and extended temperature tolerance
- Wireless range extension for LoRa/LoRaWAN devices
- Edge processing for event buffering and local alerts
- Easy mobile/web configuration and management tools
- Flexible power options for mains or battery operation
- Alert mode
- Cloud integration via MQTT, REST API, or FTP
Why Choose Sentra's K20 Edge Repeater?
Reliable network extension and seamless data flow for remote sensor deployments, ensuring uninterrupted monitoring in challenging or large-scale infrastructure projects.
Extended Network Reach
Expands the coverage of sensor networks in hard-to-reach or remote locations
Reliable Data Delivery
Maintains consistent communication even in challenging terrain or long distances
Durable Construction
IP65-rated housing built to withstand outdoor and industrial conditions
Smart Edge Management
Locally handles data buffering and event forwarding to prevent data loss
Main technical specifications
| Radio communication protocol | LoRa | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Supported unlicensed bands | 863-874.4MHz (EMEA, India), 902-928MHz (North America), 915-928MHz (APAC, Latin America) | ||||||||||||
| Antenna | Integrated internal antennas GPS, 4G, LoRa (peak gain=2,6dBi) | ||||||||||||
| Maximum distance between hops | 150 m to 3 km / 0.1 mi to 1.83 m | ||||||||||||
| Maximum number of hops | 8 hops | ||||||||||||
| Sensitivity | |||||||||||||
| Node to Repeater/ Gateway | Down to -137 dBm (SF11) | ||||||||||||
| Repeater to Repeater/ Gateway | Down to -127 dBm (SF7) | ||||||||||||
| Communications performance | |||||||||||||
|
|||||||||||||
| Device capacity per network | |||||||||||||
|
|||||||||||||
| Power options | |||||||||||||
| Power options | PoE both mode A and mode B (802.3af specifications); 5V through SB; PoE injector for indoor included in the kit | ||||||||||||
| Mean power consumption | 4.5 W | ||||||||||||
| Weather protection | IP67 | ||||||||||||
| Operating temperature | -40°C +60°C | ||||||||||||
Got Questions? We've Got Answers.
It strengthens and extends wireless sensor networks, ensuring data from remote or hard-to-reach sensors reliably reaches gateways.
The repeater boosts weak signals, enables multi-hop communication, and reduces data loss across long distances or obstructed areas.
While it requires connected sensors, the K20 can locally store and forward data during temporary gateway or network outages.
It is designed for large infrastructure projects, tunnels, bridges, rail corridors, and other locations where direct connectivity is challenging.
It can run on mains power or battery setups and is engineered for low-maintenance, long-term operation in outdoor or industrial environments.
The K20 supports standard communication protocols (MQTT, REST API, FTP) and works with Sentra gateways or third-party dashboards for seamless data integration.