Teltonika FMB120 — Advanced 2G GPS Tracker with 1-Wire and iButton

The Teltonika FMB120 is an advanced 2G GPS tracker that bridges the gap between basic vehicle tracking and professional fleet management. With a 1-Wire interface for temperature monitoring, iButton and RFID driver identification, Bluetooth 4.0 and a rich set of digital and analogue inputs, it's perfectly suited for taxi companies, car rental operators, logistics fleets and public transport providers across the UK.

As an official Teltonika distributor in the UK, Tracking Hardware UK ships the FMB120 directly from our London warehouse — with trade pricing available for telematics service providers and fleet operators.

Key Features

• 1-Wire interface — connects temperature sensors for cold chain and refrigerated vehicle monitoring

• iButton and RFID driver identification — identify drivers at the start of each journey for accountability and insurance compliance

• Real-time GPS tracking — GNSS with GPS, GLONASS, Galileo and BeiDou, under 2.5 metre accuracy

• Bluetooth 4.0 — connects to BLE sensors and supports OBD2 wireless diagnostics Remote immobiliser — digital output allows remote vehicle disabling via your fleet platform

• Crash and tow detection — built-in accelerometer triggers alerts on impact or unauthorised movement

• Jamming detection — alerts when GPS signal interference is detected

• Green driving monitoring — tracks harsh braking, acceleration and cornering for driver behaviour reports

• CAN bus compatible — works with Teltonika CAN adapters for deeper vehicle diagnostics

• Backup battery — 170mAh Li-ion keeps the device running if vehicle power is cut

• Over-the-air updates — firmware updatable remotely via FOTA Web.

Typical Use Cases

Ideal for fleet management, taxi companies requiring driver identification, car rental operators, public transport providers, logistics and delivery companies, and refrigerated vehicles requiring basic temperature monitoring.

Frequently Asked Questions

What is the difference between the FMB120 and the FMB920?

The FMB120 adds a 1-Wire interface for temperature monitoring, iButton and RFID driver identification, and more digital and analogue inputs compared to the basic FMB920. If you need driver ID or temperature monitoring, the FMB120 is the right choice.

What is the difference between the FMB120 and the FMB125?

The FMB125 adds dual SIM and RS232/RS485 serial interfaces for connecting professional third-party sensors like digital fuel level sensors and Garmin navigation. If you don't need those interfaces, the FMB120 gives you the same 1-Wire and iButton functionality at a simpler configuration.

How does iButton driver identification work?

Drivers tap a small iButton key fob against the reader at the start of each trip. The device logs the driver ID alongside all location and journey data, letting fleet managers know exactly who was driving each vehicle at any given time.

Can the FMB120 monitor temperature in refrigerated vehicles?

Yes. The 1-Wire interface connects to temperature sensors, making it suitable for basic cold chain monitoring. Temperature data is logged and transmitted alongside location data in real time.

Can I buy in bulk?

Yes — we supply telematics service providers, fleet operators and resellers across the UK. Volume pricing and trade accounts are available. Contact us for a bulk quote.