Teltonika 3G advanced fleet tracker with RS232 + RS485 + dual SIM + RFID + tachograph reading · the mid-tier workhorse for EU fleet operators wanting fuel sensors and driver ID together.
Data Points
Alerts
Vehicle Types
FMB125 has RS232, RS485, dual SIM, and a richer I/O profile · designed for fuel sensors and RFID driver ID. FMB140 leads with native CAN bus and K-Line tachograph. If you need fuel-tank sensors, pick FMB125. If CAN/J1939 commercial reads matter more, pick FMB140.
Yes via RS232 or RS485. Most Senegalese fleet installs use the Omnicomm or Eurosens RS485 fuel-level sensor wired to the FMB125's RS485 pins. Calibration runs in Configurator. Traxelio reads the calibrated fuel value live.
Yes for cross-border trucking: primary SIM on Orange SN, backup on Free SN or a Mali/Côte d'Ivoire SIM. The device auto-switches when the primary loses signal. For single-city use (Dakar only), dual SIM is overkill.
Overview
Track your FMB125 GPS tracker with Traxelio. Full compatibility with Teltonika devices. Live tracking, geo-fencing, alerts and more.
About Teltonika
Lithuanian fleet-grade GPS hardware (FMB, FMC, FMM families) shipped to 150+ countries, the de-facto European standard for commercial vehicles.
Speaks the Teltonika Codec 8 Protocol protocol. Read the protocol reference →
Works with Traxelio · send us the IMEI
Free compatibility check · 24h response
Configurator is a desktop app (Windows) used to set the server endpoint, accelerometer thresholds, geofence rules, and I/O assignments on FMB/FMC/FMM devices over USB. Codec 8 + GPRS settings are read and written from the same screen. There is no end-user mobile app · Teltonika devices report to a platform, the platform (Traxelio, Wialon, Navixy, etc.) provides the user app.
Technical Specs
| Brand | Teltonika |
| Protocol | Codec 8 / Codec 8 Extended |
| Status | Compatible |
| Data Points | 12 |
| Supported Alerts | 17+ |
| Compatible Vehicles |
Car
Motorcycle
Pick up
Truck
Bus
Fuel Tank
|
| Setup | Contact us for setup details → |
Certified
Data Collected
Your tracker sends 12 data points with every position update, giving you complete visibility.
Live latitude and longitude coordinates updated every few seconds.
Current vehicle speed in km/h, used for speed alerts and driving analysis.
Elevation above sea level, useful for terrain and route analysis.
Direction of travel in degrees, shown as compass bearing on the map.
Reverse-geocoded street address for every position update.
GPS signal precision in meters, indicating location reliability.
Engine on/off status detected via the vehicle wiring harness.
Cumulative distance traveled, used for mileage reports and maintenance.
Total engine running time, key for service interval tracking.
Device or vehicle battery voltage to detect low-power conditions.
Fuel tank level percentage, used for refill detection and consumption reports.
Cell tower and signal strength data for connectivity diagnostics.
Data availability depends on device configuration and installation type.
Detectable Events
Receive 17+ live alerts from your FMB125 via push notification, email, or WhatsApp.
The device is back online and transmitting data.
The device has stopped reporting. It may have lost connection or power.
The vehicle is currently in motion.
The vehicle is stationary.
The vehicle is exceeding the set speed limit.
The vehicle has entered a defined zone.
The vehicle has exited a defined zone.
Possible towing activity detected, check vehicle status.
The ignition is ON. The engine has started.
The ignition is OFF. The engine has been stopped.
The vehicle has been idling for a long period.
Hard braking detected, driver safety alert.
Rapid acceleration detected, driving behavior alert.
Sharp turning detected, driving behavior alert.
Potential impact detected based on sudden deceleration and course change pattern.
A fuel refill was detected.
Key Benefits
See all your vehicles on a live map
Accurate mileage and trip history for billing and disputes
Remotely disable stolen vehicles and recover them quickly
Know instantly when vehicles cross designated zones
Track speeding, harsh braking, and risky driving
Get alerts when vehicles move outside working hours
Identify fuel waste from idling and inefficient routes
Get reminders before breakdowns happen
Plan optimal routes and increase deliveries per day
Control who can see and manage which vehicles
Send us the IMEI, we confirm compatibility within 24 h and walk you through the setup. No credit card required to test.
Setup
Pros
Cons
Pros
Pricing
This device retails for $75.00 – $110.00
Traxelio plan from 17 USD/mo · See all plans →
Most common: wrong RS485 baud rate or polling interval. Check the sensor's manual for default baud (Omnicomm 19200, Eurosens 9600). Configure the matching value in the FMB125 Configurator. Run sensor calibration after wiring.
Verify both SIM slots have data plans active. The default switch threshold is 10 minutes of no signal · adjustable in Configurator. Some early firmware revisions had switching issues, update to the latest firmware.
Confirm RFID reader is wired to the 1-Wire interface (not RS232) and that the iButton/RFID profile is selected in Configurator. Some FMB125 batches need the 1-Wire jumper enabled.
Teltonika
Alternatives
FAQ
Common questions about using the FMB125 with Traxelio
Set up in under 10 minutes. No technical expertise required.