It depends on your vehicle's cold tire pressure:

8 Bar (116 PSI) Version: Best for standard pickups, Class B campervans, or light trailers where tire pressure stays below 100 PSI.

15 Bar (217 PSI) Version: Essential for Class A/C Motorhomes, Heavy-Duty 5th Wheels, and Commercial Trucks. If your cold pressure is 110 PSI or higher, you MUST choose this version to accommodate natural pressure spikes during travel.

The standard transmission range is approximately 25-30 feet (8-10 mete
Recommendation: If your total rig length (Truck + Trailer) exceeds 30 feet, or if your vehicle has a heavy metal chassis that may block signals, we strongly recommend adding a Signal Booster to ensure 100% data synchronization.rs).

The high-efficiency solar panel keeps the display charged during daylight driving. The built-in 500mAh battery provides backup power for night driving and cloudy days. For extended periods without sun, simply use the Type-C USB port to charge — one full charge lasts weeks under normal use.

Yes. The S04 is designed for heavy-duty vehicles. The 15 BAR (217 PSI) version covers ALL RV types including motorhomes, 5th wheels, travel trailers, and toy haulers. It comes pre-configured with high-pressure alarm set at 116 PSI, so it's ready to use out of the box for most RVs.

The S04 monitors 6 wheels simultaneously — perfect for most 6-wheel RV configurations (tow vehicle 4 + trailer 2, or Class A motorhome 6). For larger setups, we recommend checking our 8-sensor RV TPMS option.

Each sensor uses a high-capacity CR1632 battery that lasts approximately 12 months under standard driving conditions. They are easily replaceable by the user—no need to buy a whole new sensor when the battery runs low.

Not at all. Simply screw the external sensors onto your tire valve stems (hand-tight, no tools needed), mount the display on your dashboard, and the system auto-pairs within seconds. Average installation time: under 10 minutes for 6 sensors.

This is completely normal. The pre-displayed readings are residual test data from our quality control checks at the factory. Once you install the sensors on your tire valves, the real-time data will automatically overwrite these values.

That is a great question, but there is a major technical difference between factory systems and a dedicated heavy-duty setup:

• Indirect vs. Direct Monitoring: Most standard factory vehicles use Indirect TPMS, which doesn't actually measure air pressure. Instead, it uses your car's ABS wheel-speed sensors to estimate if a tire is flat. It will not show you real-time PSI numbers or critical temperature changes on your dashboard.
• The RV & Trailer Blind Spot: Factory TPMS is strictly designed for the 4 tires of your solo vehicle. When you hook up an RV, travel trailer, or fifth wheel, your factory dashboard cannot monitor those towed tires.

Our direct TPMS system gives you real-time, sensor-to-screen precision for both your towing vehicle and your trailer simultaneously, catching dangerous pressure fluctuations before they escalate.

You are absolutely correct that tire age, wear, and structural damage are the leading causes of highway blowouts. Regular tire replacement (every 6–7 years) and visual checks are absolutely essential.

However, a TPMS is not a replacement for maintenance—it is your second pair of eyes on the highway. Even brand-new tires can run over a stray nail, suffer a slow leak, or experience severe internal friction.

While driving, your eyes and common sense cannot detect:

• A slow, silent leak that drops your PSI over 50 miles, overheating the tire wall.
• A sudden temperature spike caused by a sticking brake caliper or bearing failure.
• Rapid decompression before the vehicle begins to fish-tail.

Our TPMS catches these invisible, real-time metrics instantly, giving you the critical minutes you need to pull over safely before a compromised tire catastrophically blows out.

This is completely normal and usually depends on the installation sequence. To ensure instant pairing, always power on your monitor before screwing the sensors onto your tire valves.

If you installed the sensors while the monitor was still turned off, the system will enter its standard background syncing cycle. It may take 10 to 15 minutes of waiting (or a short drive) for the monitor to capture the signal and display the correct, updated tire pressure and temperature.

If you want an instant sync, simply unscrew the sensors, turn on your monitor first, and then screw the sensors back on.