Technology: HaLow Radio Plus Mesh Networking

Sub-1 GHz range and penetration, Wi-Fi class bandwidth, and a mesh stack built for linear and scattered field sites.

Wi-Fi HaLow (IEEE 802.11ah)

HaLow operates in Sub-1 GHz spectrum. Compared with 2.4 GHz Wi-Fi, Sub-1 GHz signals travel further and pass through obstacles more effectively, which is why the KF-DTU Gen1 reaches up to 500 m point-to-point and a single hop through 4 floors, while still offering 2/4/8 Mbps selectable bandwidth for sensor data, logs and images from field cameras or controllers where the project requires them.

Self-Developed Mesh Stack

The mesh stack relays data across up to 10 hops with millisecond forwarding. Networks can be arranged as star, chain, ring or mesh hybrid topologies: chain suits pipelines and roads, star suits a plant yard, and hybrid mesh suits farms and distributed energy sites where node positions are irregular. One network supports 50+ nodes and 500+ sensors.

Transparent Transmission

For integrators, the key point is compatibility. The DTU passes Modbus RTU and Modbus TCP transparently and supports TCP/UDP transport. RS485 devices keep their existing addresses and polling logic; the wireless mesh replaces the cable, not the application protocol.

Management

Configuration is plug-and-play for basic use, with Web management for site setup, AT commands for module-level control, and CLI/JSON for scripted or platform integration. See deployment for the field workflow and comparison for how this differs from LoRa and 4G approaches.