Dualmi DV490 GPS 4G Vehicle Tracker

he DV490 is an advanced vehicle tracking terminal equipped with dual-network (4G
+ 2G) support for reliable, uninterrupted communication. Featuring a built-in
high-performance 25x25x4mm BeiDou/GPS antenna, the device delivers enhanced
satellite acquisition capability and precise positioning accuracy.
The terminal offers comprehensive expansion options including SOS emergency
button, speaker and microphone integration, analog input, relay control, and TTL/485
interface for peripheral devices, making it adaptable to diverse application scenarios.
With an IP67 waterproof rating, the DV490 is engineered to perform reliably even in
harsh operating conditions.

Main
Antenna :Built-in optimized ceramic satellite antenna, 4G bracket antenna
Led Indicator : GNSS(blue), Network (green), Power (red)
Internal Battery :300mAh/3.7V industrial grade lithium polymer battery
Standby Current : ≤5mA (powered by built-in battery)
Color : Black
Size : 88(L)*38(W)*17(H) mm
Weight : 45g
Working Voltage : 9-90VDC
Working Temperature : -20℃ to +70℃

N e t w o r k
Celluar : 4G LTE + 2G
Bands : EU Version:
LTE-FDD: B1/B3/B5/B7/
B8/B20
GSM: 900/1800MHz
LA Version:
LTE-FDD: B1/B2/B3/B4/B5/B7/
B8/B28/B66
GSM: 850/900/1800/1900MHz
Memory : 8MB
Phase Error : RMS phase error <5, peak phase error <20
Max. Output Power : LTE-TDD: Class3(23dBm+1/-3dB) LTE-FDD: Class3(23dBm+-2dB)
Maxi. Frequency Error : ±0.1ppm
Receiving Sensitivity : TD-LTE :≤96dBm(10M) LTE-FDD :≤96dBm(10M)

GNSS
Frequency : BDSB1, 1561.098MHz ； GPS L1,1575.42MHz
RF Channel : Auto Switch Between GPS and Beidou Singal / Dual Channel
Number of Channels : 66
Antenna Size : 25*25*4mm
Positioning Accuracy : ＜10m
Tracking sensitivity :-165dBm
Acquisition sensitivity : -148dBm
TTFF : Avg. hot start: 1sec (open sky) , Avg. cold start: 32sec (open sky)

-Real time tracking :Positioning accuracy <10m in open outdoor environments
-Power cut off alarm : The device will trigger a power cut off alarm when the external
power is disconnected or the connecting cable is cut
-Fall detection alarm : After the device is installed and the device posture is identified, thedevice will report a fall detection alarm when the device posture changes.
-Tamper alarm :Report a tamper alarm when the device is removed
-Low external battery alarm : When the device detects that the external power voltage is lowerthan the set threshold, the device will trigger an low external power
battery alarm.
-Low internal battery alarm : When the device detects that the internal battery voltage is lowerthan the set threshold, the device will trigger an low internal battery
battery alarm
-Overspeed alarm : The vehicle speed threshold can be set through the platform or SMS.When the vehicle's speed exceeds the threshold within the set time,
an overspeed alarm will be reported
Vibration alarm : When the vehicle ignition is off and in a stationary state, the device
detects vehicle vibration and a vibration alarm will be reported