Shenzhen Youwei Communication Co., Ltd.
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1. Product Introduction
The M38 represents a next-generation compact tracking solution combining triple-constellation satellite reception with 4G Cat1 cellular connectivity. This plug-and-play device delivers:
Military-grade positioning accuracy through simultaneous GPS/Beidou/GLONASS tracking
Uninterrupted monitoring via magnetic charging and backup power systems
Voice-enabled functionality (compliant with regional regulations)
Legal Notice: Voice features are jurisdiction-restricted and designed exclusively for emergency communications and lawful tracking applications. Unauthorized surveillance use is prohibited.
2. Performance Highlights
✔ Tri-Mode Satellite Lock
72-channel GNSS receiver
<5m civilian accuracy
✔ Intelligent Power Management
Auto-wake charging system
5000mAh emergency battery (optional)
✔ 4G Cat1 Connectivity
MQTT protocol optimized for IoT
-162dBm tracking sensitivity
✔ Geo-Intelligence Features
Dynamic geofencing with multi-level alerts
90-day trajectory memory
3. Technical Parameters
| Category | Specification |
| RF Performance | 2320-2370MHz/2575-2635MHz |
| Positioning | Cold Start: 32s (typ.) |
| Hot Start: <5s | |
| Transmission | Output Power: 28.0±2dBm |
| Environmental | -20°C to +60°C operation |
| Power | 3.7V Li-ion (5000mAh optional) |
4. Functional Matrix
| Feature | Operational Details |
| Scheduled Reporting | Configurable interval positioning |
| Virtual Perimeter | 500m-100km adjustable geofence |
| Movement Analytics | Speed/direction/stop duration recording |
| Power Loss Alert | Instant notification on power disruption |
5. Compliance & Compatibility
China Mobile 4G network certified
RoHS/CE compliant hardware
OTA firmware upgradeable