Wireless air spring pressure sensor — remote air suspension monitoring for trucks and trailers

Why wireless is the point, not a detail

Any pressure sensor can measure 5-10 bar. The hard part on a trailer or a bus is getting the reading out: a cable along the axle is exposed to road debris, a connector through the chassis is another leak path, and slip rings are expensive. A wireless sensor removes that whole discussion.

We build it with the same sensing technology we use for tyre pressure — a sealed, battery-powered radio transmitter per measuring point, and a receiver that puts the values onto a bus your controller already reads. That is the real difference: not a new sensor principle, but a sensor platform that already survives under a truck.

Specification

Item	Value
Pressure range	5-10 bar (air spring working range)
Medium	Gas — compressed air
Wireless	Wireless, no wiring on the axle. Licence-free radio transmitters, or Bluetooth 5.1 where no receiver is wanted
Sensor temperature	-40 to +125 C (industrial sensor line)
Construction	Automotive-grade — designed for vehicle use, fitted on commercial vehicles in series
Output to your system	One interface per receiver, fixed at the factory: CAN 2.0B (11-bit or 29-bit extended frame) / RS232 / RS485 / Modbus RTU
Bus behaviour	Modbus RTU slave only — your PLC or controller is the master
Sealing	IP68 (industrial line)

Remote monitoring, in the sense a fleet means it

"Remote" means the value is available where the decision is made — in the cab, in the workshop, or on a platform. Three routes, all supported:

• To the vehicle controller — CAN / RS232 / RS485 / Modbus RTU, documented message map.
• To a display in the cab — so the driver sees pressure without a second system.
• To the cloud — through a CAN-to-4G gateway (4G CAT.1, MQTT over TLS / HTTP posting), for remote data collection across a fleet, with change-triggered upload instead of a constant stream.

Where it fits

• Trailers and semi-trailers — a leaking air suspension airbag shows up as pressure decay long before it shows up as a complaint.
• Buses and coaches — kneeling and load-levelling systems.
• Special vehicles with air suspension and no factory monitoring.

What we will not claim

Gas only, and a small range. The industrial sensor line is specified to about 14 bar. If your circuit runs at 100-300 bar, or the medium is oil or water rather than air, we are not the right supplier — we will say so in the first reply instead of quoting something that fails later.

No safety-restraint content here. Where this page says airbag it means the air suspension airbag, the rubber bellows that carries the axle. It has nothing to do with a safety airbag (SRS).

Compliance: CE in progress, expected to be held in November.

How a project starts

1. Working pressure range, number of measuring points, and where the values must end up.
2. We say which sensor and how many receivers that needs, and whether a repeater is required.
3. One vehicle is instrumented first. If the readings do not match your gauge, we fix that before anything else ships.

Send us the application

Leave this field empty

Name *

Company *

Business email *

Country

What you need *

Send

FAQ

Do we need a receiver, or can it go straight to a phone?

Two products: with a receiver it lands on CAN / RS232 / RS485 / Modbus or a cloud gateway; without a receiver use our Bluetooth pressure sensor and read it from a phone.

Can one gateway cover both tyre and air-spring pressure?

Yes — same platform, same receiver family, one integration instead of two systems. They remain separate measuring points.

What about a 12 bar system?

Tell us the working pressure in the first message and we confirm against the specified range in writing instead of assuming.

Is this automotive-grade?

The construction is automotive-grade and the platform is used on commercial vehicles in series. We do not claim automotive qualification certificates.