Vehicle Tracker

4G LTE OBD Tracker

JM-VL04 INS-aided LTE OBD Tracker

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 the dark spots occur in the area with poor GNSS signal. By leveraging four 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. And now, not only is the embedded microphone for remote listen-in, but also sound recording.

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  • INS-aided GPS tracking;Ensures constant tracking in the area with poor GPS signal or even without
  • 4G LTE Communication;The device can receive and transmit data in the coverage of 4G, 3G and 2G network
  • Driving Behavior Analysis (Advanced);Acceleration, braking, cornering, sudden lane change, collision, skidding, rollover, roll & pitch
  • Mileage Accuracy ≥98%;Precise mileage calculation based on a unique algorithm, the mileage error can be less than 2%
  • Voice Alarm;In risky circumstances, internal speaker will sound human voice to remind drivers to drive carefully
  • Remote Listen-in & Voice recording;An inconspicuous Mic allows you to remotely listen in and record the sounds around the device
  • 9-36V Rated Voltage;Compatible with a wide range of input voltage, able to work on diverse vehicles
  • BLE4.0 Supported;Through bluetooth connection you can configure parameters, upgrade software, and debug



Cellular Specification



Internal LTE antenna

Frequency band

Cat M1: B1/B2/B3/B4/B5/B8/B12/B13/B18/B19/B26/B28/B66
Cat NB2: B1/B2/B3/B4/B5/B8/B12/B13/B18/B19/B28/B66
LTE-FDD: B1/B3/B5/B7/B8/B20/B28
LTE-TDD :B38/B40/B41
GSM: B2/B3/B5/B8
LTE-FDD: B1/B2/B3/B4/B5/B7/B8/B28/B66
WCDMA: B1/B2/B5/B8
Data Transmission

LTE-FDD Data Rate (Mbps): 10 (DL)/5 (UL)
WCDMA Data Rate (kbps): 384 (DL)/384 (UL)
EDGE Data Rate (kbps): 296 (DL)/236.8 (UL)
GPRS Data Rate (kbps): 107 (DL)/85.6 (UL)


GPS Specification



GPS/Glonass/Beidou/AGPS/LBS assisted
GNSS antenna 4mm GNSS antenna
GNSS Receiver Type TBD
Tracking sensitivity -165 dBm
Acquisition sensitivity -148 dBm (cold) /-163 dBM (hot)
TTFF (open sky) Avg. hot start≤1sec

Avg. cold start≤32sec




Dimensions 65 x 50 x 25mm
Weight 60g
Case material Flame retardant ABS+PC, V-0 standard
Operating temperature   -20°C to 70°C
Storage temperature  -40°C to 85°C
Operating humidity  95% RH @ 50° C non-condensing
Battery capacity 50mAh
Operating oltage 9~36V
Standby current <10mA (12V)
Microphone Silicon Mic
Speaker Decibel Output: >85 dBA at 10 cm
INS sensor 3-axis accelerometer and 3-axis gyroscope (optional)
Bluetooth Bluetooth 4.0
Bluetooth antenna Internal
LED indication GNSS, Cellular, Power
USB Micro USB*1, for upgrading and debugging
SIM card Nano
Memory 8MB flash memory


User Manual


Quick Start

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