GPS for construction and machinery: three scenarios, three devices

Monitoring a backhoe with its own battery is not the same as a compressor that moves between sites without power. This page splits the three typical construction-sector cases and tells you exactly which model to order.

The real industry problem: dust, water and theft

On a construction site, a GPS is not installed like in a van. Three factors rule: dirty environment (cement dust, aggregate particles), pressure water during end-of-shift washes, and a machinery theft rate in Spain of around 1,000 incidents/year according to insurance industry reports. Devices designed for cars die at 8 months; those designed for construction last the working life of the machine.

IP67, IP68 and IP69K: what they really mean on site

The IP grades of IEC 60529 translate to construction as follows:

  • IP67 — withstands 1 m immersion for 30 min. Good for backhoe, dumper, regular aerial platform. Not good for areas washed with an industrial pressure washer.
  • IP68 — continuous immersion at specified depth. Useful for a magnetic tracker that may end up under rainwater pooling for days.
  • IP69K — jet at 80 °C and 100 bar. Only this one withstands industrial high-temperature pressure washing. If you are going to mount the tracker on a concrete mixer that goes through a wash tunnel, IP69K is mandatory.

Practical tip: read the IP protection rating and always ask for the specific number. Saying "high IP" or "sealed" without a number is marketing, not specification.

Case 1: machinery with its own power supply

Excavators, backhoes, loaders, dumpers, self-propelled aerial platforms. They have a 12 or 24 V battery you can use to power the tracker. The fight here is environmental resistance and reading the machine bus (some have proprietary CAN, others J1939 if post-2010).

Recommended device: FMC234. IP67, 10–30 V power, 3 digital inputs (ignition, pressure switch, tilt sensor), 2 outputs (starter cut-off, beacon). Supports CAN-CONTROL for non-intrusive bus reading if the machine has it.

What you can measure: real hours of use (not those declared by the operator), start/end of shift on site, geofence per plot and unauthorised exit events.

Case 2: machinery with frequent industrial washing

Concrete mixers, tanker trucks, construction vehicles that go through a wash tunnel or are pressure-washed daily. The FMC234 does not cut it here: IP67 fails against an 80 °C, 100 bar jet. IP69K is needed.

Recommended device: FTC880. IP69K enclosure, internal rechargeable battery (months of autonomy in 1-report-a-day mode, weeks in standard mode), GNSS and 4G LTE. Designed to be glued or screwed to the chassis and forgotten for a couple of years.

The FTC880 also solves the case of a tractor or vehicle entering a wash-down area on an agricultural/livestock operation.

Case 3: powerless assets — pure anti-theft

Diesel generators, towable compressors, site huts, warehouse containers, small generator sets, expensive tooling consolidated on a pallet. They do not have 12 V available or not reliably.

Recommended device: TAT240. Standalone tracker, IP68, magnetic mount (the base is a strong magnet that sticks to a metal chassis), very long-life internal battery (up to 5 years in low-power mode), 4G LTE.

It works in "scheduled report" mode: a position every X hours when the asset is parked, a burst of positions when it detects movement. That gives you up to years of autonomy without touching the device, and immediate alert if someone takes the generator in the middle of the night.

Installation notes on site

  • Antenna in line of sky. Excavator cabs with metal roofs heavily attenuate the GNSS signal. If the FMC234 goes inside the cab, connect an external GNSS antenna to the roof.
  • Always a fuse. Heavy machinery 24 V battery with harsh starts: 1 A or 2 A fuse mandatory in the tracker power line.
  • Double-sided tape or magnetic, no internal screws, if the chassis belongs to the end customer (machinery rentals).
  • SIM with open APN and industrial M2M coverage. Construction sites are usually in peri-urban areas with patchy coverage: a FMC125 dual SIM may make sense if your main carrier drops on a particular fixed site.

Frequently asked questions

Does the TAT240 work inside a metal container?

Limited. GNSS and 4G signal inside a closed container is heavily attenuated. If the container is always closed, mount the TAT240 magnetically to the outer roof; if it opens frequently, inside can work but with less consistent reports.

How long does the TAT240 battery really last?

Depends on the report profile. In active mode (several reports/day) between 6 months and 2 years. In low-power mode (1 report/day + motion alarm) up to 5 years. Estimate calculable with Teltonika's battery calculator.

Can I read the engine hours of an excavator without tapping into the bus?

Yes, by connecting the FMC234 digital input to the ignition/contact line. You will not read the manufacturer's exact hours, but you will get real operating hours, which is what is usually billed.

Does the same device work for machinery rental as for an own fleet?

Yes, the hardware is the same. What changes is the platform: for rental you want one with billable-hour tracking and geofences per site. We can discuss platforms based on your volume.

And if I just want to locate the generator, nothing more?

Magnetic TAT240, a low-cost M2M SIM, basic platform. Typical order: 1 device per asset from a unit value of 1,500 €.