D12 Helmet Positioning Terminal
Model: D12 / 4G LTE + GNSS
Indoor & outdoor coverage
GNSS outdoors plus Bluetooth and WiFi positioning indoors keep workers continuously visible.
RTK high precision
Optional RTK dual-frequency positioning reaches centimetre-level accuracy outdoors.
SOS & TTS voice
One-press emergency call and platform voice announcements straight to the helmet.
Built for hard shifts
Deep waterproof housing, warning light and vibration-based auto sleep for long duty cycles.
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Product Overview
The D12 is a split-type safety helmet positioning terminal built for personnel attendance and field workforce management. It unifies indoor and outdoor positioning — GNSS (BDS + GPS + Galileo + QZSS), optional RTK high-precision, Bluetooth and WiFi indoor positioning and 5G low-power modes — with SOS emergency calls, TTS voice announcements, safety fences and trajectory playback.
Helmet-mounted terminal
A split-type module that mounts to a standard safety helmet without changing how crews work.
Know where crews are
Live positions, safety fences and trajectory playback across indoor and outdoor areas.
Attendance & safety
Automate mustering, monitor lone workers and trigger alarms on entry to danger zones.
Hauptfunktionen
Technische Daten
| Network | 4G LTE |
| Frequency Bands | LTE-TDD B34/B38/B39/B40/B41; LTE-FDD B1/B3/B5/B8 |
| APN | APN private network supported |
| GNSS Positioning | BDS + GPS + Galileo + QZSS |
| RTK | Supported (optional) |
| Indoor Positioning | Bluetooth / WiFi indoor positioning (optional) |
| Indoor Accuracy | Approx. 300 m |
| Outdoor Accuracy | 10 cm - 10 m |
| Cold Start | < 30 s |
| Upload Frequency | 1s / 2s / 5s / 10s / 15s / 30s / 60s / 120s |
| Battery | 3.8 V 1000 mAh |
| Keys | Power, Function, SOS |
| USB Port | 4-pin POGO, 5V/1A |
| SIM Card | Nano SIM (5x6 chip) |
Application Scenarios
See how the A3 4G wired GPS tracker delivers value across industries.
Site attendance
Automatic check-in as crews pass the site entrance.
Indoor positioning
Bluetooth and WiFi keep workers visible inside plants.
SOS emergency
One press raises an alarm with the worker's exact position.
Chemical & hazardous
Safety fences and alerts protect teams in risky zones.
Mining & tunnel
Positioning continues where GNSS alone cannot reach.
Emergency response
Coordinate response teams with live location and TTS.
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