GRUNDIG 550S Solar Powered TPMS for RVs & Trucks, 6–36 Wheel Monitoring, 200 PSI, Real-Time Tire Pressure & Temp Alerts
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Specification
- Compatible Vehicles 6–36 Wheel Monitoring. Specially engineered for touring caravans, campervans, motorhomes, and heavy-duty vehicles requiring high-pressure stability
- Operating Temperature -40°C to 120°C (-40°F to 248°F)
- Waterproof Rating IP67
- Tire pressure adjustment range 0 - 200 PSI (0 - 13.8 BAR)
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Key Product Highlights
- Large Backlit LCD Display: High-definition display panel with adjustable backlight ensures clear, effortless reading under intense sunlight or dark night driving conditions.
- Dual Power & Versatile Brackets: Supports both high-efficiency Solar charging and a mini Type-C USB port. Comes with two mounting brackets for flexible windshield or dashboard placement.
- Real-Time Safety Alarm Modes: Instant visual and audible alerts for High Pressure, Low Pressure, High Temperature, Fast Leakage, Sensor Low Battery.
- German Infineon Microchip Engineering: Powered by an advanced Infineon processor and explosion-proof battery for maximum RF wireless stability, rapid 3-second refresh rates, and pinpoint accuracy (±1.5 PSI / ±2°C).
- Supports 6 to 36 Wheel Monitoring: Multi-axle expandability seamlessly monitors from 6 up to 36 tires simultaneously. Flexible unit conversion available (PSI, BAR, ℉, ℃).
- Digital Tire Position Exchange: Easily swap tire positions directly on the display menu after tire rotations without having to physically unscrew and reinstall sensors.
- IP67 Waterproof & Extreme Operating Range: External sensors operate reliably from -40°C to 120°C (-40°F to 248°F) with user-replaceable CR1632 batteries (up to 2-year battery life).
- Heavy-Duty US & European Compatibility: Designed for Class A/B/C RVs, Fifth Wheels, Travel Trailers, Dually Trucks, European Campervans, and Commercial Multi-Axle Rigs.
Broad Vehicle Compatibility (US & European Markets)
Specially engineered for American and European long-haul RVs, heavy-duty tow rigs, and multi-axle commercial fleets requiring continuous high-pressure stability:
- US Motorhomes (Class A, B & C): Fully supports large Class A pushers, Class C rigs, and European integrated motorhomes (Wohnmobile) on Fiat Ducato, Mercedes Sprinter, or Ford chassis.
- Fifth-Wheel Trailers & Toy Haulers: Prevents dangerous highway blowouts on heavy-duty American Fifth Wheels and multi-axle Travel Trailers during long interstate hauls or European autobahn trips.
- Dually Pickup Trucks & Tow Vehicles: Seamlessly monitors multi-wheel setups on heavy-duty dually pickups (Ford Super Duty F-350/F-450, RAM 3500, Chevrolet Silverado 3500 HD) and tow rigs.
- European Campervans & Van Conversions: Optimized for popular European campervan conversions (Kastenwagen) including VW Crafter/Transporter, Mercedes Sprinter, Fiat Ducato, and Renault Master.
- Commercial Transports & 18-Wheel Rigs: Built for commercial semi-trucks, 18-wheelers, heavy logistics trailers, and multi-axle transport configurations supporting up to 36 wheel positions.
Powered by German Infineon Microchip
At the heart of the GRUNDIG 550S is the industry-leading German Infineon Microchip. Built with precise German engineering standards, it operates on a dedicated 433.92MHz frequency to ensure rapid 3-second signal refresh rates, exceptional anti-interference stability across long trailer lengths, and ultra-low power consumption for extended battery lifespan.
Real-Time Safety Alerts
Stay informed and drive with total confidence. The system provides 5 comprehensive safety alarms (High/Low Pressure, High Temp, Fast Leak, Sensor Low Battery) with real-time visual and audible warnings:
High Pressure Alert
Triggers when tire pressure rises above threshold, preventing dangerous highway blowouts.
Low Pressure Alert
Warns you instantly when tire pressure drops below safe limits to protect rims and maintain fuel efficiency.
High Temperature Alert
Alerts you when internal tire heat exceeds safety limits, helping avoid rubber tread separation.
Quick Air Leakage Alert
Detects rapid air loss in seconds due to punctures, giving you critical time to pull over safely.
Sensor Battery Alert
Flashes a low battery icon on the exact wheel position so you know precisely when to replace the CR1632 cell.
Why TPMS Matters
Protect Your Family, Your RV, and Your Journey. Beyond simple monitoring, this system is your ultimate insurance against the unexpected. A tire blowout on a remote interstate or European highway can ruin a long-planned road trip and lead to costly repairs. By alerting you to pressure and temperature changes instantly, it helps prevent serious accidents and ensures optimal tire footprint—reducing rolling resistance and saving fuel on every long haul.
Technical Specifications
| Monitoring Capacity | Supports 6 to 36 Wheel Positions |
| Pressure Range | 0 to 13.8 BAR (0 - 200 PSI) |
| Pressure Accuracy | ±0.1 BAR (±1.5 PSI) |
| Temperature Accuracy | ±2°C (±3.6°F) |
| Operational Temperature | -40°C to 120°C (-40°F to 248°F) |
| Storage Temperature | -40°C to 120°C (-40°F to 248°F) |
| Transmission Power | 10dBm |
| Transmission Frequency | 433.92 MHz RF Wireless |
| Sensor Waterproof Rating | IP67 Waterproof & Dustproof |
| Sensor Battery Model & Life | CR1632 (User-replaceable), approx. 2 Years Lifespan (-40°C to 120°C) |
| Sensor Dimensions & Weight | Height: 21mm | Diameter: 26.5mm | Weight: 25g (excluding O-ring) |
| Display & Charging | Large Backlit LCD | Solar Panel & Type-C Charging | Dual Mounting Brackets |
Frequently Asked Questions
Can I switch units between PSI/BAR and ℃/℉?
Yes. You can easily switch between measurement units (PSI, BAR, ℉, ℃) through the settings menu to match your preferred local US or European pressure and temperature standards.
How many wheel positions can this TPMS support?
This system features advanced multi-axle expandability, supporting real-time pressure and temperature monitoring for 6 up to 36 wheel positions simultaneously. It is ideal for RVs, fifth wheels, dually trucks, and commercial semi-trailers.
How do I rotate tires without removing the sensors?
The 550S supports a digital "Tire Position Exchange" feature. After rotating your vehicle's physical tires, you can simply adjust the wheel positions directly inside the display menu settings without unmounting the sensors.
What should I do if a sensor shows "Data Loss"?
If the monitor alerts you to data loss for a wheel position, simply unscrew the corresponding sensor, wait 1 minute, and screw it back on to trigger a force re-pairing with the system.
Is the monitor dashboard-safe during hot summer weather?
Yes. The monitor utilizes a high-grade heat-resistant battery engineered to safely withstand elevated dashboard temperatures during extreme summer heat.
Are the sensor batteries easy to replace?
Yes. Each sensor uses a standard CR1632 coin cell battery. When the low battery alarm is triggered, you can easily open the sensor cap using the included tool and replace the battery within minutes.
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