1. Product Overview
The Topeak SmartGauge D2X is a precision digital tire pressure gauge designed for accurate and easy measurement of tire pressure. It is compatible with both Presta and Schrader valves, offering versatility for various bicycle and automotive applications. The gauge features a clear digital display, an air release button for fine-tuning pressure, and a 360-degree rotating head for optimal viewing.

Image 1.1: The Topeak SmartGauge D2X Digital Tire Pressure Gauge.
Key Features:
- Accurate Readings: Provides precise pressure measurements up to 260 psi / 18 bar.
- Universal Compatibility: Works with Presta and Schrader valves without changing internal parts.
- Illuminated Display: 360-degree rotating gauge for easy reading in all lighting conditions.
- Pressure Adjustment: Continuous pressure reading with air release button for fine-tuning.
- Convenient Functions: Auto-on and auto-off features with last reading alarm.

Image 1.2: Key features of the SmartGauge D2X, highlighting valve compatibility and pressure range.

Image 1.3: Detailed view of the gauge's rotating head, air release, and digital display.
2. Setup and Initial Use
2.1 Battery Installation
The Topeak SmartGauge D2X comes with batteries pre-installed. If replacement is needed, open the battery compartment located on the back of the unit. Insert new batteries, ensuring correct polarity, then securely close the compartment.
2.2 Powering On/Off
- To Power On: Press the power button (
) once. The display will illuminate. - To Power Off: Press and hold the power button for a few seconds, or the unit will automatically shut off after a period of inactivity to conserve battery life.
2.3 Unit Selection
The gauge can display pressure in PSI, Bar, or kg/cm². To switch between units, press the 'Unit' button (
) while the gauge is powered on. The selected unit will be shown on the display.
3. Operating Instructions
3.1 Measuring Tire Pressure
- Ensure the gauge is powered on and the desired unit is selected.
- Remove the valve cap from the tire.
- Press the gauge head firmly and squarely onto the tire valve stem. For Presta valves, ensure the valve core is unscrewed before attaching the gauge.
- The pressure reading will appear on the digital display. Hold the gauge in place until the reading stabilizes.
- Remove the gauge from the valve stem. The reading will be held on the display for a short period before auto-off or until reset.

Image 3.1: Measuring pressure on a bicycle component with the SmartGauge D2X.

Image 3.2: Measuring bicycle tire pressure with the SmartGauge D2X.
3.2 Air Release Function
If the tire pressure is too high, use the air release button located on the side of the gauge. While the gauge is attached to the valve and displaying pressure, press the air release button to slowly bleed air from the tire. The digital display will provide continuous real-time pressure readings as air is released, allowing for precise adjustment.
4. Care and Maintenance
4.1 Cleaning and Storage
- Clean the gauge with a soft, damp cloth. Do not use abrasive cleaners or immerse the unit in water.
- Store the gauge in a dry place, away from extreme temperatures and direct sunlight.
- Keep the valve head free from dirt and debris to ensure proper sealing and accurate readings.
4.2 Battery Replacement
When the battery indicator shows low power or the display becomes dim, replace the batteries. Refer to section 2.1 for battery installation instructions.
5. Troubleshooting
| Issue | Possible Cause | Solution |
|---|---|---|
| Inaccurate or inconsistent readings | Poor seal on valve stem; low battery; gauge malfunction. | Ensure firm, straight connection to valve. Replace batteries. If issues persist, contact customer support. |
| Air leaks when measuring Presta valve | Presta valve core not fully unscrewed; improper seating of gauge head. | Fully unscrew Presta valve core before attaching. Press gauge head firmly and quickly to minimize air loss. |
| Display is dim or blank | Low or dead batteries. | Replace batteries (refer to section 4.2). |
| Gauge head difficult to rotate | Accumulated dirt or debris; manufacturing variation. | Clean the swivel mechanism. If rotation remains stiff, contact customer support. |
| No real-time PSI display during air release | This model provides continuous reading during air release. If not, contact support. | Ensure the air release button is pressed correctly. If the issue persists, contact customer support. |
6. Technical Specifications
| Specification | Detail |
|---|---|
| Brand | Topeak |
| Model Name | Topeak 60100010 (TSG-D2X) |
| Material | Plastic |
| Item Dimensions (L x W x H) | 4.6” x 1.7” x 0.7” (11.8 x 4.2 x 1.9 cm) |
| Item Weight | 2 Ounces (0.06 kg) |
| Max Pressure | 260 PSI / 18 Bar |
| Valve Compatibility | Presta, Schrader |
| Display | Digital, 360-degree rotating, backlit |
| UPC | 883466033825 |
7. Warranty and Customer Support
The Topeak SmartGauge D2X is covered by a manufacturer's warranty. For specific warranty details, claims, or technical support, please refer to the official Topeak website or contact their customer service directly.
You can find more information and support by visiting the Topeak Store.





