The F4 Plus is the most advanced taximeter in the Digitax range, combining precision, connectivity, and built-in printing in one compact device.
Its integrated thermal printer streamlines operations, saving space and eliminating the need for external peripherals — ideal for taxi professionals and fleet operators.
The high-visibility LCD display ensures clear readings in any light condition, while GPS, 4G LTE or 5G Cat-M modem, and Bluetooth 4.x provide full, built-in connectivity.
Simple, elegant, and designed for real-world efficiency, the F4 Plus supports 63 smart OTA-updatable tariffs and includes multiple I/O ports with full Digitax SDK support for custom integrations.
Certified MID, OIML R21, and E-Mark, it delivers a reliable, all-in-one solution for modern, connected taxi operations.
- LCD Display
- Compact and Lightweight
- Built-in GPS
- Built-in BT 4.x
- Built-in 4G LTE or CATM 5G modem
- Built-in thermal printer
- 7 buttons
- European MID, OIML R21, and E-Mark certification
- Compatible with External
- Printer
- 3 RS232 Serial Ports
- 4 Digital I/O Inputs/Outputs
- 5 Power Outputs
- 63 Smart and Independent Tariffs
- Digitax SDK for Development
- Updates via Digitax OTA
- Compatible with Digitax Device Tracking System
Download Technical Data Sheet
F4 PLUS - AVAILABLE CONFIGURATIONS
Advanced Taximeter for Modern Mobility
The F4 Plus is an advanced, next-generation taximeter designed to meet the evolving needs of the modern taxi industry.
Combining cutting-edge technology, elegant design, and proven reliability, it delivers a seamless and efficient experience for both drivers and passengers.
Equipped with the latest connectivity options and a user-friendly interface, the F4 Plus stands out for its performance and versatility.
For fleets requiring a more compact setup, the F4 Slim version is also available — retaining the same key features as the standard model in a smaller, streamlined format.
Integrated Bluetooth Module
The F4 Plus includes a built-in Bluetooth 4.x module that enables fast, secure communication with external devices.
This feature allows easy connection to POS systems for electronic payments and other supported accessories, enhancing flexibility and operational efficiency.
Through the Digitax SDK, developers can integrate the F4 Plus with third-party systems, creating custom applications that expand functionality and optimize the taxi’s connected environment.
Integrated GPS Module
The F4 Plus can be equipped with an integrated GPS module, providing continuous and precise vehicle tracking.
This feature enables advanced monitoring functions that enhance control and safety for taxi fleets.
Key functions include:
Real-time vehicle tracking for accurate trip monitoring and reporting
Geofencing to define service areas and receive alerts when vehicles exit designated zones
Fleet supervision through the Digitax Device Track platform for full operational visibility
Data accuracy and reliability, ensuring complete traceability for compliance and analytics
Together, these features ensure secure, efficient, and intelligent fleet management across any operation.
Integrated 4G LTE / 5G Cat-M Module
The F4 Plus can be equipped with an integrated 4G LTE or 5G Cat-M modem, ensuring fast, stable, and secure data transmission for every trip.
This connectivity module optimizes communication between the taximeter, back-office systems, and connected devices — keeping operations efficient and always online.
Available configurations:
4G LTE modem — delivers high-speed data transfer and stable communication
5G Cat-M modem — designed for IoT applications with wide coverage and low power consumption
Main benefits:
Real-time data transfer for trip records, reports, and updates
OTA support for remote configuration and software maintenance
Enhanced reliability and reduced downtime for always-connected fleets
With built-in connectivity, the F4 Plus simplifies operations, improves fleet efficiency, and ensures seamless integration with modern mobility systems.
High-Visibility LCD Display
The F4 Plus features a customizable high-visibility LCD display designed to ensure clarity and readability in any lighting condition.
Its advanced display technology enhances both driver usability and passenger visibility.
Key features:
Adjustable display content for personalized or fleet-specific information
Automatic brightness control via built-in light sensor for optimal visibility day and night
Durable, high-contrast screen for clear data even under direct sunlight
Seamless integration with Digitax Mobile Data Terminals (MDTs) for synchronized fleet information
Thanks to its intelligent design, the F4 Plus display ensures reliable readability, operational comfort, and full compatibility with connected mobility systems.
Integrated Thermal Printer
The F4 Plus comes with a built-in thermal printer as a standard feature, ensuring fast and reliable receipt printing directly from the taximeter.
This integration simplifies operations, saves installation space, and ensures full compliance with taxi regulations.
Key features:
50 mm roll diameter for extended print capacity and reduced maintenance
High-speed, low-noise printing for efficient daily operation
Automatic paper feed and easy roll replacement for uninterrupted service
Compact design — no need for external printers or additional hardware
Thanks to its integrated printer, the F4 Plus delivers an all-in-one solution that combines precision, speed, and practicality — ideal for professional taxi operations.
European Certifications — MID, OIML R21, and E-Mark
The F4 Plus is fully certified to meet the highest European and international standards for accuracy, safety, and reliability.
Certifications include:
– MID (Measuring Instruments Directive) — ensures compliance with European metrological standards for fiscal accuracy
– OIML R21 — guarantees precision and reliability in fare calculation and taximeter operations
– E-Mark Certification — confirms full compliance for in-vehicle installation, electromagnetic compatibility, and automotive safety
With these certifications, the F4 Plus provides complete assurance of quality and regulatory compliance, making it a trusted choice for professional taxi operators across Europe.
9-Axis Inertial Module (Optional)
The F4 Plus can be equipped with an optional 9-axis inertial module for advanced motion and driving analysis.
It accurately detects acceleration, rotation, and orientation, providing valuable data for fleet monitoring and safety control.
Main benefits:
– Precise detection of vehicle movements and events
– Enhanced safety analysis and performance reporting
– Reliable data for fleet management systems
This optional module adds a new layer of intelligence and control to connected taxi operations.
TECHNICAL SPECIFICATIONS
Dimensions | Width: 11.6 cm Height: 8.5 cm Depth: 7 cm |
Weight | Gr. 370 ca. |
Display | Full Color Graphic LCD display Viewing area 4.3” diagonal WQVGA 480x272 Resolution Color TFT LED Display with 256,000 Colors Display clearly day and night viewable |
Power Supply | Operating Range 8 - 16 V |
Operating Temperature | From -20° to +80° C |
Humidity | 95% |
Mechanical Strenght | 3g |
Backlight Buttons | 7 retro illuminated user buttons |
Totalizator Mode | Trip by Trip Details 45 + 45 Statistic Memory 12 x 45 Monthly Statistic Statistic for each Driver |
Tariff Structure | 63 smart and fully independent tariffs, with 27.000 programmable parameters: Night tariffs Holidays tariffs Auto fare Tariffs Auto-distance tariffs Fix rate tariffs Regular tariffs distance or time Tariff Double tariffs distance and time Smart combined tariffs structures |
Tarfiff Management | Distance automatic switching Time automatic Switching Date automatic Switching Fare amount automatic Switching Remote command switching Fix agree rate Geo-fencing GPS automatic zone-cross switching |
Tariff Program Change | Manual by Key By External Command / Application By Programmer By Memory Key |
Peripheral Connections | Printer Magnetic Card Reader Passanger Sensor Mobile Data Terminal Cellular Phone by BLE Connection |
Communications Protocols | Comtax2 Protocol Other can be implemented or request |
Operative Firmware | Upgradable Firmware on Flash |
Transducer | Mechanical Hall Effect or Internal Adapter for Electronic Speedometer Up to 100.000 l/km |
Power Outputs | 1 Roof Light 25 Watts 4 Programmable Power Outputs 5 Watt |
Dimensions | Width: 11.6 cm Height: 8.5 cm Depth: 7 cm |
Weight | Gr. 370 ca. |
Display | Full Color Graphic LCD display Viewing area 4.3” diagonal WQVGA 480x272 Resolution Color TFT LED Display with 256,000 Colors Display clearly day and night viewable |
Power Supply | Operating Range 8 - 16 V |
Operating Temperature | From -20° to +80° C |
Humidity | 95% |
Mechanical Strenght | 3g |
Backlight Buttons | 7 retro illuminated user buttons |
Totalizator Mode | Trip by Trip Details 45 + 45 Statistic Memory 12 x 45 Monthly Statistic Statistic for each Driver |
Tariff Structure | 63 smart and fully independent tariffs, with 27.000 programmable parameters: Night tariffs Holidays tariffs Auto fare Tariffs Auto-distance tariffs Fix rate tariffs Regular tariffs distance or time Tariff Double tariffs distance and time Smart combined tariffs structures |
Tarfiff Management | Distance automatic switching Time automatic Switching Date automatic Switching Fare amount automatic Switching Remote command switching Fix agree rate Geo-fencing GPS automatic zone-cross switching |
Tariff Program Change | Manual by Key By External Command / Application By Programmer By Memory Key |
Peripheral Connections | Printer Magnetic Card Reader Passanger Sensor Mobile Data Terminal Cellular Phone by BLE Connection |
Communications Protocols | Comtax2 Protocol Other can be implemented or request |
Operative Firmware | Upgradable Firmware on Flash |
Transducer | Mechanical Hall Effect or Internal Adapter for Electronic Speedometer Up to 100.000 l/km |
Power Outputs | 1 Roof Light 25 Watts 4 Programmable Power Outputs 5 Watt |
FAQ
The F4 Plus combines a certified taximeter, built-in printer, and full connectivity in one compact device.
It eliminates external modules, simplifies installation, and ensures seamless integration with modern fleet systems.
Looking for a more compact solution? Explore the F4 Slim
Yes. With its built-in Bluetooth 4.x module and RS232 serial port, the F4 Plus connects easily to POS terminals and other compatible devices for fast, secure electronic payments and smooth data exchange.
The GPS module is fully integrated, providing real-time location tracking, geofencing, and fleet supervision through the Digitax Device Track platform.
Learn more about Digitax Device Track platform
The F4 Plus supports 4G LTE or 5G Cat-M, offering fast, reliable data transfer and OTA updates for remote management and system maintenance.
Yes. Through the Digitax SDK, developers can easily connect the F4 Plus to third-party applications, enabling custom integrations and fleet-specific solutions.
The F4 Plus is MID, OIML R21, and E-Mark certified, ensuring full compliance with European metrological and automotive standards.
Yes. The F4 Slim version offers the same core functionality as the standard model in a more compact format — ideal for space-constrained installations
The 9-axis inertial module monitors acceleration, rotation, and orientation to improve driving analysis, safety, and fleet diagnostics.
Yes. The device supports OTA (Over-the-Air) updates for tariffs, firmware, and configurations, ensuring continuous optimization without manual intervention.
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