4G Fleet Connectivity
LTE Cat 1 keeps vehicle tracking and event reporting dependable across modern network coverage areas with automatic fallback.
GPS Tracker
FMC125 4G GPS Tracker
A 4G LTE Teltonika tracker built for connected fleet operations — real-time vehicle visibility, driver behaviour monitoring, fuel sensor integration, and RS232/RS485 peripherals in one compact device.
4G LTE Cat 1
RS232 + RS485
Bluetooth 4.0
GPS/GLONASS
Power Input
10 – 30V DC
Memory
128 MB Flash
Connectivity
4G LTE Cat 1
Backup Battery
170 mAh Li-Ion
Device Size
65 × 56.6 × 20.6 mm
Protection
IP41 Rated
Why it is useful
Built for vehicles that need
Built for vehicles that need
more than basic tracking
FMC125 is useful when a fleet needs location plus data from connected equipment, fuel probes, or vehicle interfaces — all in a single telematics setup.
Peripheral Integrations
RS232 and RS485 support makes it suitable for fuel level sensors, RFID readers, Garmin navigation, and other fleet accessories.
Operational Visibility
Track trips, ignition, driver behaviour, route activity, harsh events, and maintenance-related inputs through the connected platform.
Use Cases
Where FMC125
Where FMC125
fits well
Use this tracker for vehicles and assets where live location is only one part of the operational data you want to capture.
- Fleet tracking for logistics, service vehicles, construction fleets, and long-running field operations.
- Fuel monitoring deployments using compatible fuel sensors connected through serial interfaces.
- Vehicle security workflows with ignition, towing, movement, and geofence alerts.
- Driver behaviour insights using accelerometer-based event detection and configurable inputs.
- Advanced telematics projects that need external accessories or CAN data adapters.
Features and Specifications
Product Specifications
FMC125 captures vehicle, location, and sensor data for Aether's connected operations platform. The details below highlight specs most relevant for installation planning.
Network & Location
| Cellular | 4G LTE Cat 1 with fallback support |
| GNSS | GPS, GLONASS, GALILEO, BEIDOU, QZSS |
| A-GPS | Supported |
| Bluetooth | 4.0 + LE for sensors & accessories |
Location Accuracy
| Hot start | < 1 s |
| Warm start | < 25 s |
| Cold start | < 35 s |
| Tracking sensitivity | -165 dBm |
| Position accuracy | < 2.5 CEP |
| Update interval | Configurable via Teltonika Configurator |
Serial & I/O
| RS232 | 1 port for fuel sensors, RFID, Garmin |
| RS485 | 1 port for compatible accessories |
| Digital inputs | 2 |
| Digital outputs | 1 |
| Analog inputs | 1 |
| CAN adapter | 1 (LV-CAN200, ALL-CAN300, OBDII dongle) |
| 1-Wire | 1 (temperature sensor, iButton reader) |
Events & Alerts
| Ignition | On / Off detection |
| Geofence | Zone entry / exit alerts |
| Harsh events | Acceleration, braking, cornering |
| Towing | Movement without ignition |
| Crash detection | Accelerometer-based |
| Custom events | Configurable via I/O parameters |
Power Supply
| Input voltage | 10 – 30V DC |
| Protection | Overvoltage protection |
| Nominal current (12V) | < 36 mA |
| Peak current (12V) | < 1 A |
| Backup battery | 170 mAh Li-Ion, 3.7V |
| Battery purpose | Continuity during power loss / tow alert |
Sleep Modes
| GPS Sleep | GNSS off; GSM active |
| Online Deep Sleep | Low-power; server connection kept |
| Deep Sleep | Periodic wake on schedule |
| Ultra Deep Sleep | Minimum power draw |
| Wake trigger | Ignition, movement, timer, I/O |
Physical
| Dimensions | 65 × 56.6 × 20.6 mm |
| Weight | 55 g |
| Enclosure | IP41 rated |
| Operating temp (no battery) | -20°C to +85°C |
| Operating temp (with battery) | -20°C to +40°C |
| Memory | 128 MB internal flash |
Configuration
| Remote config | FOTA Web, FOTA over air |
| Local config | Teltonika Configurator (USB) |
| SMS config | Supported |
| BT config | Bluetooth 4.0 wireless |
| Protocol | Codec 8 / Codec 8 Extended |
Aether Integration
Connect hardware data to real operations
Aether combines FMC125 tracker data with fleet dashboards, fuel reports, alerts, service workflows, and role-based visibility for operations teams.
- Live vehicle location, route history, trip summaries, and utilization insights.
- Fuel level trend monitoring, refill detection, consumption analysis, and exception alerts when paired with compatible sensors.
- Configurable notifications for movement, idle time, ignition, route deviation, and site entry or exit.
- Installation planning, calibration support, and device configuration for each vehicle category.
FAQ
Common questions about FMC125
Yes. FMC125 can connect with compatible fuel sensors through RS232/RS485 serial interfaces and send fuel level data into the Aether platform for monitoring, trend analysis, and exception alerts.
Yes. The device supports both RS232 and RS485 interfaces, making it suitable for fuel sensors, RFID readers, Garmin navigation, and other onboard fleet accessories.
Yes. It supports location visibility, utilisation tracking, fuel monitoring, and operating alerts for construction vehicles and field equipment running long shifts.
Yes. Aether supports device configuration, installation planning, sensor calibration, and platform setup based on vehicle type and reporting requirements.
FMC125 supports GPS Sleep, Online Deep Sleep, Deep Sleep, and Ultra Deep Sleep modes — all configurable to optimise battery backup duration and reduce data costs when vehicles are stationary.
Need help choosing the right tracker?
Share your vehicle type, required sensors, and reporting goals. Aether can recommend whether FMC125, another Teltonika model, or a different hardware setup fits your deployment better.