North America50k units / yr
Pet GPS collar, cellular + AI activity scoring
Subscription cost dropped 47% via batched MQTT; 21-day battery vs 9-day previously.
4G · GNSS · ESP32 · MCU · MULTI-SENSOR ODM
BELINKAGE4G IoT ODM
Skip the sourcing nightmare. Get a production-ready 4G IoT device — from concept to mass production in 14 weeks.
We develop and manufacture custom 4G IoT products for brands and businesses in China. One team coordinates hardware, firmware, apps, cloud services, testing, and production for more predictable costs and delivery.
12+
Production-grade reference designs
8–14 wks
Concept to certified prototype
HW + SW
Hardware · Firmware · App / Cloud
CE / FCC / RED 3.3
Optional export compliance support
01 / Solutions
Six reference designs you can ship under your brand.
Six reference designs of different types are available for your review. We own a complete technical platform to deliver highly customized solutions and rapid implementation based on your requirements. Client business confidentiality is strictly protected.
Reference
Cold chain · Vehicle telematics
4G Vehicle Temperature Monitor
Multi-probe temperature, humidity, and door telemetry over 4G with audible & SMS alerts.
View design
Reference
Pet · Consumer wearables
4G Pet GPS Tracker
Live GPS, geofencing, activity & resting heart rate. 60-day battery on Cat.1 bis PSM.
View design
Reference
Health · Assisted living
4G Elderly SOS Pendant
One-button SOS, automatic fall detection, two-way voice, GNSS — all over 4G.
View design
Reference
B2B · Logistics & rental
4G Compact Asset Tracker
Bolt-on or magnetic; 3-year battery on schedule mode; tamper alert + door reed.
View design
Reference
Outdoor · Imaging
Solar 4G Trail / Wildlife Camera
1080p / 2K capture, two-way audio, day-night IR, US tri-carrier compatible.
View design
Reference
Smart home · Outdoor
Smart 4G + Wi-Fi Lawn Sprinkler Controller
8-zone Wi-Fi/4G sprinkler, weather-aware, voice-assistant ready, water-budget reports.
View design
More
Explore our reference app and more product ideas
02 / Technology
One stack. Every wireless, every sensor your product needs.
We don't bolt modules onto reference boards. Each platform is a co-designed system — RF front-end, power budget, antenna placement, and firmware all owned by us.
Cellular
- 4G LTE Cat.1 bis (Quectel EG915Q / EG800Z, Fibocom LE271-GL)
- Global single-SKU bands incl. Verizon, AT&T, T-Mobile, EU MNOs
- PSM / eDRX deep-sleep for week-to-month battery life
- VoLTE, SMS fallback, FOTA over cellular
Location
- Multi-GNSS: GPS, GLONASS, Galileo, BeiDou
- A-GNSS for sub-4s cold start
- Wi-Fi / Cell-tower hybrid positioning for indoors
- BLE beacon proximity & UWB option on demand
Compute
- ESP32-S3 / ESP32-C6 for Wi-Fi + BT/BLE workloads
- Nordic nRF52/nRF53 for ultra-low-power BLE
- STM32L4/L5 / GD32 low-power MCUs
- On-device AI on RV1106 / Kendryte for vision tasks
Sensors
- G-sensor / IMU (ST LIS2DH12, Bosch BMI270)
- Temperature & humidity (Sensirion SHT4x, SHTC3, HDC3020, HDC2080)
- CO / CO₂ / VOC / PM (MQ-7, Sensirion SCD4x, SPS30)
- Pressure, soil moisture, hall, mmWave, PIR
Imaging
- OmniVision OS04A10 / SmartSens SC4210 CMOS
- Low-light & IR-cut day-night switching
- H.265 hardware encode for 720p over LTE
- Optional edge AI: species / object / fall detection
Cloud / App
- White-label iOS / Android apps and responsive web portals
- Device cloud with MQTT / API integration and role-based access
- Maps, geofences, alerts, reports, and subscription workflows
- FOTA, fleet monitoring, and regional data hosting options
03 / Process
Six steps. One supplier. One accountable team.
From requirements and component selection to prototype validation and production, reduce the back-and-forth between hardware, software, and factory teams. One team works to the same product specification, cost target, and schedule.
- 01
Discovery
Week 1We discuss product requirements and functional specifications, clarify expected sales volume and cost targets, and deliver a feasibility memorandum within the first week.
- 02
Architecture
Week 2–3Block diagram, module selection, MCU & sensor shortlists, antenna and power budgets, mechanical concept. Reviewed against a compliance checklist.
- 03
EVT prototype
Week 4–7First PCBA + tooled enclosure. Firmware up to bring-up. Internal field testing and RF pre-scan in our anechoic chamber.
- 04
DVT & certification
Week 8–12Validate the design against your specification and define testing and certification scope for the target market. Export projects can plan testing against relevant CE, FCC, RED 3.3(d/e/f), ETSI EN 303 645, RoHS, and REACH requirements.
- 05
Mass production
Week 13+PVT, then ramp. SMT, assembly, programming, calibration, packaging in our Shenzhen line. ISO 9001 / 14001 audited.
- 06
Sustaining
OngoingFOTA fleet management, field RMA, BOM watch, EOL tracking, security patches. We stay on the hook for the life of the product.
04 / Compliance
Plan testing and certification around your product and market.
Define wireless, battery safety, reliability, and data-related testing and compliance scope at project kickoff, and include it in the development plan. Projects targeting overseas markets can draw on our CE, FCC, and other compliance experience.
CE
EU conformity, 2014/53/EU RED
FCC
Part 15B / 22 / 24 / 27 modular
RED 3.3
Cybersecurity for connected radio
ETSI EN 303 645
Consumer IoT baseline
UKCA
Post-Brexit UK conformity
PTCRB / GCF
Carrier-grade cellular
Bluetooth SIG
QDID listed end-products
RoHS / REACH
EU substance compliance
ISO 9001 / 14001
Quality & environment
IP67 / IP68
Ingress protection tested in-house
UN38.3 / IEC 62133
Battery transport & safety
GDPR-ready
EU + US dual-region cloud
05 / References
Selected reference engagements.
Names are masked under NDA. Volumes and timelines are real, drawn from projects shipped to NA and EU markets in the last 24 months.
IOT · HARDWAREBELINKAGE · DOC-PHOTO
Western Europe18k units / yr
Cold-chain asset tracker, Ultra-low power consumption
10W fast charging, IP67 rating, compatible with GNSS and A-GNSS. Featuring ultra-low power consumption and exclusive offline data function.
United Kingdom30k units / yr
Elderly SOS pendant with fall detection
False-positive rate <2.1% in 90-day field trial. Customer rebranded as flagship product line.
DACH region12k units / yr
Solar 4G trail / wildlife camera
0.2s fast capture speed, ultra-low power consumption and excellent night image quality.
06 / Factory
A real factory, not a forwarding address.
Our Shenzhen facility is ISO 9001 / 14001 certified. Two SMT lines, two assembly lines, RF pre-scan chamber, IPX/IK drop testing, climate aging chambers, and a small-batch tooling shop.
SMT capacity
1.2M placements / day
Assembly
5 product families in parallel
Annual output
1.8M units
Lines
2 SMT · 2 assembly · 1 calibration
RF lab
Pre-scan, OTA, conducted
Environmental
-40°C to +85°C aging
Compliance
ISO 9001 · 14001 · IATF 16949-aligned
Engineering
Hardware · Firmware · App / Server · Quality
SMT · PRODUCTIONBELINKAGE · DOC-PHOTO
ASSEMBLY · LINEBELINKAGE · DOC-PHOTO
TEST · INSPECTIONBELINKAGE · DOC-PHOTO
07 / Start
Tell us what you're trying to ship.
A hardware engineer reads your email within one working day. Our WeChat official account and WeChat contact also connect you directly with an engineer.