| Hardware features |
|
| Hardware architecture |
Using dual-core central processing chip |
| Communication module |
GPRS, SMS dual channel module |
| Reliability design |
Power supply 4 levels of protection, 4 levels of watchdog |
| Circuit board protection |
Three-proof paint spray protection |
| Technical specifications |
|
| Operating Voltage |
9～33 V/DC |
| Limit voltage |
100V/DC |
| Battery protection voltage |
Low end: 9V (12V battery) or 20V (24V battery) High end: 36V |
| Anti-reverse voltage of power supply |
≥100V |
| Average working current |
70mA DC 12V |
| Power saving mode |
＜20mA DC 12V |
| spare battery |
Work 3 hours |
| Dimensions |
88x 62.5 x 32.5 mm (L x W x H) |
| Housing material |
Aluminum alloy |
| Host weight |
0.26kg |
| interface |
|
| GPS antenna |
SMA interface: -26dB cable length 5m |
| GSM antenna |
SMA interface: －3dB cable length 3m |
| Vehicle detection interface |
9 signal inputs |
| AD detection interface |
2 AD signal inputs (enhanced 2, 3, 4 type) |
| Video interface |
Serial camera input, expandable 4 cameras |
| Voice interface |
2 way voice interface |
| Data interface |
2 RS-232 serial ports |
| Environmental characteristics |
|
| Automotive EDM interference immunity |
Discharge voltage is 10 kV ～ 20 kV, discharge frequency is 20 times / s ～ 200 times / s |
| Electrical fast transient burst immunity |
4KV, experimental level Ⅳ |
| ESD immunity |
Contact discharge 6KV, air discharge 8KV, experiment level Ⅲ |
| Conducted disturbance limit |
Meets Class B requirements |
| Radiation disturbance limit |
Meets Class B requirements |
| Temperature characteristics |
Working temperature -20 ℃ ～ +60 ℃ |
| humidity |
Limit temperature -35 ℃ ～ -20 ℃, + 60 ℃ ～ + 70 ℃ |
| GPS performance |
|
| Tracking sensitivity |
-159dBm |
| Positioning time |
Cold start is less than 34 seconds; hot start is less than 3.5 seconds; warm start is less than 33 seconds, and recapture time is 1.0 second |
| positioning accuracy |
10 meters 2D RMS |
| Speed accuracy |
0.1 m / s |
| Base station positioning accuracy |
100 metres |
| GSM / GPRS performance |
|
| frequency |
EGSM900/GSM1800 |
| Transmit power |
EGSM900：CLASS4(2W)，GSM1800：CLASS1(1W) |
| GPRS |
GPRS multi-slot class8GPRS multi-slot class 10
GPRS mobile station classB
Downlink speed: up to 85.6KbpsUplink speed: up to 42.8Kbps |
| data storage |
|
| Track record storage |
50,000 track record storage |
| Dead zone make-up cache |
Cache 500 (point) positioning information |
| Road detection storage |
8 road data can be set, each road can be composed of 1023 polyline segments and 256 stations |
| Attribute area storage |
Can set 108 rectangular areas (of which 20 polygon areas can be set) |
| Image storage |
More than 200 pictures stored locally |
