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Innovating the Future of
Smart Hardware & IoT

Shenzhen Tonstem Technology Co., Ltd. – A trusted manufacturer and solution provider in FC, ESC, VTX, ELRS, IoT Modules, GPS Trackers, BLE Security, and Industrial Intercom Systems.

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About Tonstem

Shenzhen Tonstem Technology Co., Ltd. ("Tonstem") is a leading solution provider and manufacturer committed to delivering customized smart hardware and IoT solutions across various industries.

With over 10 years of experience, our R&D team specializes in Bluetooth, Wi-Fi, NB-IoT, GPS, Cat.1/4G/5G modules, flight controllers (FC), electronic speed controllers (ESC), video transmitters (VTX), and advanced sensing technologies including temperature, humidity, gas, video, and data logging.

We integrate hardware, SDKs, OS, APIs, and our self-built cloud platform to deliver intelligent, reliable, and scalable solutions. Our strategic partnerships with top semiconductor and software vendors enable vertical integration advantages across industrial, automotive, and enterprise applications.

  • ISO9001 Certified Manufacturing
  • Custom Hardware & Cloud Solutions
  • 10+ Years R&D Expertise
  • Global Industrial Partnerships
Tonstem Technology Lab

Our Product Lines

Engineered for performance, reliability, and integration. From flight control systems to industrial IoT, Tonstem delivers cutting-edge hardware solutions.

APMF405 Flight Controller

APMF405

Advanced Flight Controller with STM32F4 processor, ideal for high-performance drones and UAVs.

FC Module
RFFC-STF405

RFFC-STF405

High-efficiency flight control system with integrated RF communication and sensor fusion.

FC Module
RFVTX-5825S

RFVTX-5825S

5.8GHz 25mW-600mW VTX module with low latency and high video clarity for FPV drones.

VTX Module
RFVTX-5840

RFVTX-5840

Enhanced 5.8GHz VTX with Smart Audio support and extended frequency range.

VTX Module
RFESC-50A

RFESC-50A

50A Electronic Speed Controller with BLHeli_32 firmware, optimized for quadcopters.

ESC Module
RFESC-60A

RFESC-60A

60A high-current ESC with thermal protection and smooth throttle response.

ESC Module
RFESC-65A

RFESC-65A

65A robust ESC for heavy-lift drones and industrial UAVs with low EMI design.

ESC Module
ELRS915

ELRS 915MHz

ExpressLRS 915MHz receiver for long-range control with ultra-low latency.

ELRS Module
ELRS24

ELRS 2.4GHz

2.4GHz ExpressLRS system with high interference resistance and fast response.

ELRS Module
BLE-4GS Security Module

BLE-4GS Security Module

Bluetooth 5.0 + 4G Cat-1 security module for real-time tracking and alerts.

IoT Security
IOT Module Card

IoT Module Card

Compact NB-IoT / Cat-1 module card for smart metering, asset tracking, and remote monitoring.

IoT Module
Car Tracker

Car Tracker

GPS + 4G vehicle tracker with geofencing, real-time location, and engine diagnostics.

Tracking Device

Why Choose Tonstem?

We combine innovation, quality, and customization to deliver unmatched value.

Advanced R&D

Over 10 years of experience in smart hardware and IoT. Our team develops cutting-edge solutions with deep industry knowledge.

ISO9001 Certified

Strict adherence to quality standards across R&D, production, inspection, and supply chain ensures reliability and consistency.

Cloud Integration

We offer public and customized cloud platforms with APIs, SDKs, and data analytics for enterprise scalability.

High Performance

Our FC, ESC, and VTX modules are engineered for speed, efficiency, and stability in demanding environments.

Security First

BLE-4GS and IoT security modules provide encrypted communication, real-time alerts, and tamper detection.

Custom Solutions

We offer tailored hardware, firmware, and cloud services to meet specific industrial and enterprise needs.

10+
Years Experience
50+
Global Clients
200+
Products Delivered
ISO
9001 Certified

Frequently Asked Questions

What industries do Tonstem products serve?

Our solutions are used in drone technology, industrial automation, vehicle tracking, smart security, asset monitoring, and IoT infrastructure.

Do you offer custom firmware or hardware design?

Yes. Tonstem specializes in customized hardware, firmware, SDKs, and cloud integration based on client requirements.

Are your products compliant with international standards?

All products are developed and manufactured under ISO9001 quality management standards. We comply with FCC, CE, and RoHS where applicable.

Can I integrate Tonstem modules with my existing system?

Yes. We provide APIs, SDKs, and technical documentation to ensure seamless integration with third-party platforms.

What is your production capacity and lead time?

We support both small pilot batches and large-scale production. Lead time varies by product and volume—contact us for details.

Get in Touch

For inquiries, partnerships, or custom solutions, reach out to our team directly.

Email: nicholas.sino@foxmail.com

Phone: +86 0755-83581056

Address: 3/F, Bldg#C, Guanghui Industrial Park, #10 Dongguang Road, Huangtian Community, Hangcheng Street, Bao'an District, Shenzhen, China

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