The JM-VL04 is a professional 4G OBD vehicle tracker you can easily install. With its advanced accelerometer, gyroscope, and special algorithm, JM-VL04 can detect improper driving behaviors, precisely calculate mileages, and prevent dark spots occur in areas with poor GNSS signals. By leveraging different 4G communication modules, it covers almost all global LTE frequency bands. A revolutionary update is the voice alarm, which can remind drivers to behave correctly when their bad driving activities have been detected. Moreover, it also supports the embedded microphone for remote listen-in.
| GNSS | |
| Positioning system | GPS/GLONASS/BDS/GALILEO, AGPS/LBS assisted INS (inertial navigation system) |
| Positioning accuracy | ＜2.5m CEP |
| Tracking sensitivity | -165 dBm |
| Acquisition sensitivity | -148 dBm (cold) /-163 dBM (hot) |
| TTFF (open sky) | Avg. hot start ≤1sec Avg. cold start ≤32sec |
| Cellular | |
| Communication network | LTE Cat1 + WCDMA + GSM |
| Frequency | JM-VL04E: LTE-FDD: B1/B3/B5/B7/B8/B20/B28 LTE-TDD: B38/B40/B41 GSM: B2/B3/B5/B8 JM-VL04L: |
| Power | |
| Battery | 50mAh industrial-grade LiCo battery |
| Input voltage | 9-36VDC |
| Interface | |
| LED indication | GNSS (Blue), Cellular (Green), Power (Red) |
| Connector | OBDII port |
| SIM | Nano-SIM |
| USB | 1 x Micro-USB for configuration |
| Data storage | 8MB flash memory |
| Physical specification | |
| Dimensions | 65.0 x 50.0 x 25.0mm |
| Weight | 60g |
| Operating environment | |
| Operating temperature | -20°C to 70°C |
| Operating humidity | 5%～95%, non-condensing |
| IP rating | IP41 |
| Feature | |
| Voice monitoring range | ≤5 meters |
| Sensors | Accelerometer and gyroscope |
| Ignition detection | External power voltage |
| Scenarios | Vehicle movement alert, Over-speed alert, Geo-fence, Voice-monitoring, Vehicle battery detection, Power supply disconnection |
| Driving behavior analysis | Harsh acceleration, Harsh braking, Harsh cornering, Sudden lane change, Collision, Skidding, Rollover, Roll & pitch |
