Industrial IoT Gateways
Rugged multi-protocol gateways that bridge Modbus, CAN and serial devices to MQTT/HTTP — built for harsh factory and outdoor environments.
LINK99 researches and develops IoT devices, cloud platforms and mobile apps — engineered in Hong Kong and deployed by partners worldwide.
Founded in 2022 and headquartered in Hong Kong, LINK99 (HK) Technology Co., Limited is an R&D company focused on IoT devices, cloud platforms and mobile applications. We turn field data into connected, intelligent products.
Leveraging Hong Kong's position as a global free port and innovation hub, we serve manufacturers, system integrators and brand owners across Asia, Europe and the Americas — combining rigorous R&D with responsive, multilingual support.
Our mission is simple: make IoT products reliable, secure and effortless to deploy, so our customers can focus on what they build.
From the shop floor to the cloud — hardware, software and integration under one roof.
Rugged multi-protocol gateways that bridge Modbus, CAN and serial devices to MQTT/HTTP — built for harsh factory and outdoor environments.
ARM-based edge computers with local AI inference, enabling real-time analytics and on-site decisions without depending on the cloud.
Custom PCB design, firmware and ODM/OEM modules for vision, sensing and control applications across industrial verticals.
A secure, multilingual platform to provision, monitor and OTA-update fleets of devices deployed across distributed sites.
Production-grade MQTT 5.0 / HTTP / HAPI stacks and SDKs that accelerate secure device-to-cloud integration.
End-to-end solution design, hardware sourcing and cross-border fulfillment from our Hong Kong base.
Every product is built to survive the field, not just the lab.
MQTT 5.0, HTTP/HAPI, Modbus, CAN and RS-485 supported out of the box for legacy and modern assets alike.
TLS 1.3, device attestation, role-based access and full audit logging protect data from edge to cloud.
Store-and-forward buffering keeps data safe during network outages and syncs automatically when links recover.
Industrial-grade, wide-temperature, fanless designs run 24/7 with minimal maintenance in remote sites.
Proven building blocks for the most demanding environments.
Factory monitoring, OEE analytics and predictive maintenance on the production line.
Street lighting, traffic and environmental sensing with centralized, real-time control.
Intelligent vision nodes with on-device detection and instant alarm linkage.
Substation, solar and metering data acquisition over resilient, long-range links.
Tell us about your project, or reach us directly.
Room 605, 6th Floor, Garden Commercial Building, 75-77 Fa Yuen Street, Mongkok, Kowloon, Hong Kong