4G GPS Tracker KM-502 Technical Specifications

Real-Time Tracking & Path Replay

Track vehicles online via SMS or mobile app anytime, anywhere — with configurable update intervals triggered by time, distance, angle, movement, or ACC state. The FMS platform replays complete driving paths and generates operational reports, turning raw GPS coordinates into actionable fleet intelligence and auditable trip records.

Alarm-Triggered Photo Capture

Connect up to four external cameras that automatically capture images the moment an alarm is triggered — speed violations, geo-fence breaches, SOS activations — or at preset intervals. Photos upload alongside event data, providing immediate visual context that accelerates incident response and strengthens the evidence chain for disputes.

RFID Driver Identification

Each driver authenticates via RFID before operating the vehicle, automatically logging who is behind the wheel along with driving time and location. This per-driver tracking enables accurate shift attribution, prevents unauthorized use, and feeds reliable data into payroll and job-costing systems without manual timesheet reconciliation.

Ultrasonic Fuel Monitoring

An external ultrasonic fuel sensor delivers high-precision consumption data, detecting anomalies that indicate fuel theft, inefficient routing, or mechanical overconsumption. Cross-reference fuel drops against vehicle location and driver identity to pinpoint suspicious patterns. This layered accountability recovers 5-10% of annual fuel spend.

Remote Immobilization & On-Site Alerts

Remotely limit vehicle speed or cut fuel and oil supply via external relay to immobilize the vehicle when a critical alarm is triggered. An on-site buzzer activates simultaneously for immediate audible deterrence. This dual-action response compresses the window between detection and intervention, reducing theft recovery time.

Comprehensive Alarm & Driving Behavior Engine

Over 15 alarm types — SOS, power cut, low battery, speed, geo-fence, shake, ACC, mileage, fatigue, GPS antenna cut, hard accelerate, hard brake, hard cornering — provide full-spectrum event coverage with configurable SMS, call, or email routing. Driving behavior data feeds coaching profiles to measurably reduce collision frequency.

Technical Datasheet

Cellular Connectivity

4G LTE with GPRS fallback, real-time tracking via FMS platform, SMS-based tracking and command

Positioning

GPS, real-time online tracking with configurable update intervals: time, distance, angle, movement ratio, ACC state

Camera Support

Up to 4 external cameras, auto-capture on alarm trigger or preset time interval

Driver Identification

RFID reader support, per-driver driving time and location logging

Fuel Monitoring

External ultrasonic fuel sensor support, consumption monitoring and anti-theft detection

Remote Control

Remote engine shutdown via external relay, speed limitation, on-site buzzer/siren activation on alarm

Driving Behavior

Hard acceleration, hard braking, hard cornering detection and analysis

Alarm Types

SOS (3 preset numbers), power cut, low battery, speed, geo-fence, shake, ACC on/off, mileage, fatigue driving, GPS antenna cut, hard accelerate, hard brake, hard cornering

Alarm Notification

Configurable via SMS, call, or email per alarm type

I/O Interface

2 digital inputs (1 negative trigger, 1 positive trigger), 2 outputs

Mileage Tracking

Synchronous odometer recording, mileage-based maintenance alarm

Quality Control

10-step QC: switch, misuse, fault-tolerant, power jitter, storage, aging, temperature extreme, vibration, ripple, voltage drop testing

Cloud Platform

FMS GPS tracking software integration, real-time monitoring, driving path replay, reports

4G GPS Tracker KM-502