From Concept to Complete Product
for Your Next IoT Device

IoT product hero

Karsen Tech Limited focuses on IoT solutions for small and medium-sized devices, integrating displays, sensors, and wireless modules with custom firmware and companion apps.

Together with Radiant Electronic Limited — our sister company with over 25 years of manufacturing experience since 1995 — we provide a fully integrated path from interface design to production-ready devices.

What we do?

With offices in both Shenzhen and Hong Kong, we work at the intersection of design and manufacturing, combining technical development with global accessibility.

UI/UX design

UI / UX Co‑Design

User Interface & Experience Design for Both App and Device.

Certified UI/UX designers and team leaders with European experience craft interfaces for both apps and devices. We focus on clarity, usability, and visual harmony — from wireframes to production‑ready prototypes.

Embedded development

Embedded Development

Firmware & Communication Logic Implementation.

In‑house firmware and communication logic built by an experienced core team. We specialize in low‑power wireless systems and display integration, driver implementation, UI integration, and performance optimization.

Protocols: BLE · Wi‑Fi · Zigbee · Matter
Displays: TN / HTN / STN / FSTN / VA / TFT LCD

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App development

App Development & Integration

Companion Apps for Smart Devices & IoT Systems.

We build cross‑platform mobile apps that connect seamlessly with embedded devices: device pairing, data synchronization, real‑time control, and OTA updates across Android and iOS.

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Hardware integration (placeholder)

Hardware Integration

Display · PCB · Sensor Integration.

Displays are supplied by Radiant Electronic Limited, our in‑house LCD manufacturing partner (same management), with 15+ years in LCD design & production. PCBs and sensors come from trusted long‑term partners.

Assembly and testing

Assembly & Testing

Handled by Radiant Electronic Limited’s experienced production team in Shenzhen, China (same management). With origins as a digital watch manufacturer founded in 1995, the team brings decades of experience in precision assembly, calibration, and reliability testing.

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Delivery & Support

Offices in Shenzhen and Hong Kong; products can be exported from either location worldwide. Experienced in mass production coordination, quality control, and long‑term maintenance.

In‑house manufacturing partners

Huizhou Radiant PhotoElectronic Tech Ltd.

Producing quality LCD since 2006. Factory + dormitory cover >20,000 m², with 200+ workers. Annual output >750,000 sets of LCD screens.

radiant-display.com

Address: No. 22 Tailiang Road, Taimei Town, Boluo County, Huizhou City, Guangdong, China

Huizhou Radiant PhotoElectronic Tech thumbnail

Shenzhen Radiant Electronics Ltd.

Experienced production team in the same facility as Karsen Tech. Three decades of support across consumer timepieces, smart instruments, and industrial display modules.

Address: 301, Block C1, Lingnan Industrial Park, 7 Tang Keng Road, Henggang, Longgang District, Shenzhen 518115, Guangdong, China

Shenzhen Radiant Electronics thumbnail

Karsen Tech Skill Set

Karsen Tech Limited focuses on IoT solutions for small and medium-sized devices, integrating displays, sensors, and wireless modules with custom firmware and companion apps.

UI & App Development

  • UI / UX Design: Interface and experience design for mobile and embedded systems — from user flow to visual consistency.
  • Frontend Frameworks: Web dashboards and responsive control panels built with React and Next.js.
  • Mobile Development: Cross-platform companion apps for iOS & Android (React Native / Expo) with BLE, Wi-Fi, and Matter connectivity.
  • Backend & Cloud Integration: Cloud integration and IoT data pipelines, implemented with AWS, Azure, or custom cloud solutions.
  • Content & Data Management: Headless CMS and structured data systems for multilingual content updates.
  • App Analytics & Maintenance: Analytics, OTA updates, and continuous performance monitoring for long-term stability.

Embedded & IoT Development

  • MCU Platforms: ESP32 / Nordic / STM32 series for low-power wireless and display control.
  • Embedded Programming: Modular firmware with real-time task scheduling and OTA update support.
  • Display Integration: TN / VA / TFT LCD development and interface design for smart instruments and appliances.
  • Wireless Connectivity: BLE, Wi-Fi, Zigbee, and other low-power wireless technologies for IoT systems.
  • Platform Integration: Apple Home / HomeKit, Google Home, Alexa, and custom cloud platforms.
  • Hardware Design & Validation: Circuit review, prototype evaluation, and collaborative testing with manufacturing partners.
  • Testing & Certification: EMC / ESD / reliability testing coordination to ensure production-grade quality.
  • Manufacturing Support: Firmware upload, quality control, and production coordination with Radiant’s factory team.