AstroAI GL-0821 Large Screen Tire Pressure Gauge

Introduction

Thank you for purchasing the AstroAI Large Screen Tire Pressure Gauge. For optimal performance and safety, please read and follow all of the instructions below before operating the device. Please keep this manual for future reference.

We hope you enjoy your new tire pressure gauge!

If you need any kind of help or support from AstroAI Customer Support, you are welcome to contact them with your questions via support@astroai.com.

⚠️ Please fully read and understand this manual before using this product. Keep this manual for future reference.

Warning

• Do not use this product for any unintended purposes.
• Read and follow all the instructions before using this product.
• Check if this product has any damage before use.
• If this product is defective, do not use it; immediately contact AstroAI Customer Support for assistance.
• Keep this product out of reach of children.
• Do not expose this product to rain or immerse it in water.
• Keep this product away from fire, corrosive liquids, and magnetic materials.
• This product does not properly function in low-temperature environments; its operating temperature range is 23~122 °F (-5~50 °C).
• This product's maximum measurement range is 300 PSI; measuring pressures over 300 PSI will damage the gauge.

Specifications

• Range: 3~300 PSI, 0.2~20 bar, 20~2000 kPa, 0.2~20 kg/cm²
• Screen Dimensions: 1.3 x 0.8 in (32 × 20 mm)
• Product Dimensions: 6.3 x 2.2 x 1 in (16 × 5.7 × 2.5 cm)
• Power: 2 × 1.5 V AAA Batteries
• Operating Temperature: 23~122 °F (-5~50 °C)

Diagram

The AstroAI tire pressure gauge consists of the following parts:

• 1. LED Screen: Displays tire pressure readings and unit indicators (PSI, BAR, KPA, KG/CM²).
• 2. Nozzle: The part that connects to the tire valve.
• 3. Power Button: Used to turn the device on/off and switch units.
• 4. AAA Batteries: Power source for the gauge.
• 5. Presta to Schrader Adapter: An accessory for converting valve types.
• 6. Battery Compartment: Located on the back of the device, housing the batteries.

Instructions

Turn on the Tire Pressure Gauge

Press the Power Button. The LED screen will illuminate and display "0.0". The gauge is now ready for use.

[Image description: A hand pressing the power button on the AstroAI tire pressure gauge. The LED screen shows "0.0" with unit indicators PSI, BAR, KPA, KG/CM².]

Switching Units

When the gauge is on, press the Power Button to cycle through units: PSI, bar, kPa, and kg/cm².

[Image description: A sequence of LED screen displays showing different unit selections: PSI, BAR, KPA, KG/CM².]

Measuring

Align the nozzle with the tire valve and firmly press it in to ensure a strong connection. Hold until the screen shows a stable reading.

[Image description: The nozzle of the AstroAI tire pressure gauge being pressed onto a car tire valve. An arrow indicates the direction of insertion.]

Reading

When the reading is stable, remove the gauge and read the measured value on the LED screen.

[Image description: The AstroAI tire pressure gauge displaying a stable reading of "70.0" PSI on its LED screen.]

Turn off the Tire Pressure Gauge

Press and hold the Power Button for 3 seconds to turn off the gauge. It will also turn off automatically after 30-40 seconds without any operation.

[Image description: A hand pressing and holding the power button on the AstroAI tire pressure gauge.]

How to Use the Presta to Schrader Adapter

1. Open the battery cover on the back and take out the Presta to Schrader adapter.
2. Screw the adapter onto the tire valve of a bicycle.
3. Measure the bicycle's tire pressure with the adapter.
4. After reading the tire pressure, unscrew the adapter and return it to its original place.

[Image description: The back of the AstroAI tire pressure gauge with the battery cover open, showing AAA batteries and the Presta to Schrader adapter. Another image shows the adapter screwed onto a bicycle tire valve, with a circular arrow indicating tightening.]

Battery Level Indication

The gauge's battery level is displayed in the upper right corner of the LED screen. When the indicator is illuminated white, the battery level is low and batteries should be promptly replaced.

[Image description: The LED screen of the AstroAI tire pressure gauge showing a low battery indicator.]

Battery Replacement

1. Open the battery cover on the back.
2. Take out the old batteries.
3. Load new batteries, noting the positive (+) and negative (-) poles.
4. Put the battery cover back.

[Image description: The battery compartment of the AstroAI tire pressure gauge with new AAA batteries being inserted, showing correct polarity. The battery cover is also shown.]

Troubleshooting

Flashing Screen

Check if batteries are installed properly and replace them if necessary.

Inaccurate Readings

• Ensure the gauge's nozzle is securely connected to the tire valve.
• Replace the batteries.

Abnormal Readings

• Do not use this product in low or high-temperature environments.
• Do not forcefully hit or drop this product.
• Replace the batteries if necessary.

Air Leaking

• Ensure the connection between the gauge's nozzle and the tire valve is secure.
• Check if the nozzle's seal ring is damaged.

Fail to Turn on the Tire Pressure Gauge

• Check if the batteries are depleted; replace if necessary.
• Check if the tire pressure gauge is damaged from being dropped or immersed in water.

The LED Screen Shows E-1/E-2 Codes

Contact AstroAI for maintenance or replacement.

Warranty

1-Year Limited Warranty from AstroAI.

Each AstroAI Large Screen Tire Pressure Gauge is free from defects in material and workmanship. This warranty does not cover damages caused by negligence, misuse, contamination, alteration, accidents, or abnormal conditions of operation. This warranty only covers the original purchaser and cannot be transferred.

AstroAI aims to provide customers with excellent products and customer service. To learn more, please visit support@astroai.com.