Products for Rail Vehicles

Heavy Duty TAG > Wireless Bluetooth Sensor

Intelligent HD TAG measures condition data from chassis and rail track



Easy integration into existing systems

Energy efficient

Intelligent energy management for service life up to 5 years


Optimized for use in rail vehicles


Suitable for various applications

What can Heavy Duty TAG > Wireless Bluetooth Sensor provide?

The wireless Bluetooth Low Energy sensor Heavy Duty TAG is the base of an intelligent condition monitoring system for various industrial applications. Acceleration and tilt can be recorded. With the HD TAG, for instance, rail operators can measure anomalies in wheel-rail contact, and then, detect the condition of driveline components and rail infrastructure.


Technical Information

Data transfer: Bluetooth Low Energy (2.4 GHz)
Sub1GHz ready (868 MHz)
Operating temperature: -40°C to +85°C
Protection class: IP65
Compliance: Qualification according to standards of the Rail Industry
Battery: 3 x Lithium polymer batteries, 4 Ah each,
service life up to 5 years
Data memory: 16 MB Flash
Scope of functions: Real-Time Clock (RTC)
3-axis accelerometer
  • Measuring range adjustable (±2/±4/±8/±16 g)
  • Sampling rate adjustable stepwise (1.6…6664 Hz)
Temperature sensor
Tilt sensor
OTA (Over the Air) capable
Only available in the condition monitoring solution


  • Modular system of HD TAGs, Secure Gateway and specific software packages, enables customized solutions for every application
  • Comprehensive recording of condition data provides early insights regarding wear and damage
  • Different, intelligent modes enable optimal measurement results, as well as maximum energy efficiency (service life: up to five years)


Predictive Maintenance Planning with ZF Infrastructure and Driveline Monitoring
In the infrastructure and driveline monitoring system, the wireless sensor Heavy Duty TAG forms the basis for the condition monitoring of vehicle components and the rail infrastructure. The HD TAG can be mounted either on the transmission or the bogie.The recorded data is transmitted via Bluetooth Low Energy to a Secure Gateway (VCU Pro Onboard Unit). Afterwards, the acquired measurement and route data is processed and securely sent to the ZF IoT Cloud.Rail operators obtain up-to-date analysis results, which supports maintenance cycle planning, in order to improve condition, increase efficiency and avoid unplanned downtimes. Wear, damage and potential danger spots are then detected at an early stage.

Additional Information

Learn more about the application in Graz here
Press release: Convincing All Along the Tram Line: Successful Start of the ZF Condition Monitoring System in Graz
Press release: Digital Plus on the Tracks: ZF and DB Systemtechnik Agree on Cooperation


Technical Datasheet Heavy Duty TAG

CE Declaration of Confirmity Heavy Duty TAG (German)

Only in German available

WEEE Registration Notification Heavy Duty TAG (German)

Only in German available

Operating Instructions Heavy Duty TAG

Flyer Infrastructure and Driveline Monitoring

Complete System


Service & Support

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Service Location

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Service Brochure

ZF Service for rail vehicle drivelines