The FMB641 is a powerful fleet tracking device, but it is much more than that—it’s a complete solution that transforms the way you manage your fleet.

With real-time data at your fingertips, you can make smarter decisions to improve efficiency, enhance safety, and reduce costs. Whether you’re monitoring driver performance, ensuring compliance with tachograph regulations, or keeping a close eye on vehicle conditions with integrated sensors, the FMB641 gives you the insights and control you need to stay ahead.

Designed to be user-friendly and reliable, it’s the perfect fit for fleets of any size, making it easier to manage both day-to-day operations and long-term strategies.

How Does It Work?

The FMB641 connects into the vehicles tachohead unit. Each device comes with our easy-fit cables, meaning no technical expertise is required, and can be fitted in as little as 10 minutes. Don’t worry, you’ll also get a fitting guide!

When connected, and the vehicle engine is on, live data is transmitted to our servers, such as location, speed, route history, and much more.

All this information is available for you to see in your FM Devices account.

FMB641 Specifications

Below are the detailed specifications that make the FMB641 one of the most powerful and versatile fleet management devices on the market.

Live GPS Tracking

Accelerometer Sensor

Remote Tachograph Data Download

Geofencing

Over Speeding Detection

Jamming Detection

Excessive Idling Detection

Towing Detection

Crash Detection

Odometer

Fuel counter

DDD download

GNSS: GPS, GLONASS, GALILEO, BEIDOU, SBAS, QZSS, DGPS

Receiver: 33/99 acquisition channels

Tracking Sensitivity: -165 dBM

Position Accuracy: < 2.5 m CEP

Hot Start: < 1 s

Warm Start: < 25 s

Cold Start: < 35 s

Technology: GSM / GPRS

2G Bands: Quad-band 850 / 900 / 1800 / 1900 MHz

Data Transfer: GPRS Multi-Slot Class 12 (up to 240 kbps), GPRS Mobile Station Class B

Data Support: SMS (text/data)

Input Voltage Range: 8–32 V DC with overvoltage and reverse polarity protection

Internal Back-up Battery: 550 mAh Ni-Mh, 8.4 V battery

Power Consumption:

At 12V < 7 mA (Deep Sleep)

At 12V < 12 mA (Online Deep Sleep)

At 12V < 28 mA (GPS Sleep)

At 12V < 65 mA (nominal)

At 12V < 120 mA (GPRS)

Ignition Detection: Digital Input, Accelerometer, External Power Voltage

Operating Temperature (without battery): -40 °C to +85 °C

Storage Temperature (without battery): -40 °C to +85 °C

Storage Temperature (with battery): -20 °C to +45 °C

Battery Storage Temperature: -20 °C to +45°C

Operating Humidity: 5% to 95% non-condensing

Ingress Protection Rating: IP41

Dimensions: 104.1 х 76.8 х 31.5 mm (L x W x H)

Weight: 197g

What Can the FMB641 Be Used For?

Prices To Suit You

With a range of flexible, affordable purchase options, you can rent, buy, or lease the FMB641 from as little as £3.96 a month.

Just The Device

£115
Per Device

Program yourself and connect to your own system.

FMB641 Bundle

£250
Per Device

Include the Device, SIM data, GPS, Geofencing, Remote Downloads, Tachograph Analysis & 5 Year Warranty

FMB641 FAQs

What is the FMB641 used for?

The FMB641 is a versatile fleet management device that offers GPS tracking, geofencing, remote tachograph downloads, and integration with cameras and sensors for full fleet monitoring.

How does the FMB641 track vehicles?

The FMB641 uses GPS technology to provide real-time location tracking, allowing you to monitor vehicle positions, speed, and routes directly from a user-friendly dashboard.

Can the FMB641 download tachograph data remotely?

Yes, the FMB641 enables automatic remote tachograph downloads, eliminating the need for manual data collection and helping you stay compliant with EU regulations.

Does the FMB641 support geofencing?

Yes, the FMB641 supports geofencing, allowing you to set virtual boundaries and receive instant notifications when vehicles enter or exit predefined areas.

What sensors can the FMB641 integrate with?

The FMB641 integrates with various sensors, including temperature, humidity, and door sensors, providing additional data to help monitor vehicle conditions in real time.

Is the FMB641 suitable for large fleets?

The FMB641 is can be used to manage fleets of all sizes, from small businesses with a few vehicles to large enterprises managing hundreds.

How does the FMB641 help improve fleet efficiency?

With features like real-time GPS tracking, route optimisation, and automated tachograph downloads, the FMB641 helps reduce fuel costs, improve route efficiency, and streamline fleet operations.