Introduction
This manual provides essential instructions for the safe and efficient operation of your STEELMATE T5 Portable Air Compressor Pump. Please read this manual thoroughly before using the device to ensure proper function and to prevent damage or injury. Keep this manual for future reference.
Safety Information
- Always ensure the vehicle engine is running when using the air compressor to avoid draining the vehicle battery.
- Do not leave the air compressor unattended during operation.
- After 10-15 minutes of continuous use, allow the air compressor to rest and cool for an equal amount of time before continuing operation. This prevents overheating.
- Keep the device away from children.
- Do not expose the device to rain or moisture.
- Ensure the correct pressure is set for the item being inflated to prevent over-inflation and potential bursting.
- Use only the provided accessories and attachments.
Product Overview and Components
Familiarize yourself with the components of your STEELMATE T5 Air Compressor Pump:

Image: Front and rear view of the STEELMATE T5 Air Compressor Pump with labeled parts. The front features an LED light, high precision digital display, adjustable pressure unit, '-', '+', Start/Stop, and Lighting/Unit switching buttons. The rear shows anti-slip mats, nozzles, power cable, and a stowable air hose with thermal insulation nylon.
- LED Light: Provides illumination in low-light conditions.
- High Precision Digital Display: Shows real-time pressure readings and set pressure.
- Adjustable Pressure Unit: Allows selection of desired pressure units (e.g., PSI, BAR, KPA, kg/cm²).
- '-' Button: Decreases the pressure value.
- '+' Button: Increases the pressure value.
- Start/Stop Button: Initiates or halts the inflation process.
- Lighting/Unit Switching Button: Toggles the LED light and cycles through pressure units.
- Anti-slip Mat: Provides stability during operation.
- Nozzles: Various adapters for different inflation needs.
- Power Cable: Connects to a 12V DC power source (e.g., car cigarette lighter).
- Stowable Air Hose with Thermal Insulation Nylon: Durable hose for connecting to valves.
Setup
- Connect Power: Ensure your vehicle is powered on. Connect the power cable of the air compressor to the vehicle's 12V DC cigarette lighter socket.

Image: Step 1 of 'How To Use' showing a hand connecting the power cable to a car's cigarette lighter socket.
- Attach Air Hose: Screw the air hose securely onto the valve stem of the tire or inflatable item. Ensure a tight connection to prevent air leakage.

Image: Step 2 of 'How To Use' showing the air hose being screwed onto a tire's valve stem.
Operating Instructions
Setting Desired Pressure and Unit
- Set Pressure: Use the '+' and '-' buttons to adjust the desired pressure value on the digital display. The display will show the real-time pressure when connected.
- Select Unit: Press the Lighting/Unit switching button to cycle through available pressure units (PSI, BAR, KPA, kg/cm²) until your preferred unit is displayed.

Image: Step 3 of 'How To Use' showing the digital display with a set pressure of 2.50 and the unit selection button.
Inflation Process
- Start Inflation: Once the desired pressure and unit are set, press the Start/Stop button to begin inflation.

Image: Step 4 of 'How To Use' showing the digital display during inflation, indicating a current pressure of 2.00.
- Auto Shut-off: The compressor will automatically stop inflating once the preset pressure value is reached. Ensure the preset pressure is higher than the current pressure of the item being inflated.

Image: A man standing next to a car with the STEELMATE T5 air compressor in operation, illustrating the smart auto-shutoff feature.
- Monitor Inflation: The digital screen provides real-time pressure readouts, allowing you to monitor the inflation process.

Image: The STEELMATE T5 air compressor connected to a car tire, with its LED digital display showing real-time tire pressure and button functions for decreasing/increasing pressure and unit switching.
- Inflation Speed: The T5 can inflate a 185/60/R15 tire from 0 to 2.5 Bar (36 Psi) in approximately 4 minutes. It can inflate up to 6.0 Bar (87 Psi).

Image: Illustration demonstrating the fast inflation capability, showing a car tire being inflated from 0 Psi to 36 Psi in 214 seconds for a 185/65/R14 tire.
- Continuous Use: For optimal performance and longevity, allow the compressor to cool down for at least 10-15 minutes after 10-15 minutes of continuous operation.
Using the LED Light
Press and hold the Lighting/Unit switching button to turn the integrated LED light on or off. This feature is useful for operating the compressor in dark environments.

Image: The STEELMATE T5 air compressor with its LED light illuminated, positioned next to a car tire in a dark setting, demonstrating its utility for night-time operation.
Multiple Purpose Inflation
The STEELMATE T5 is designed to inflate various items beyond car tires, including motorcycles, bicycles, balls, air pillows, cushions, balloons, and mattresses. Use the appropriate nozzle attachment for each item.

Image: A circular graphic illustrating the multiple uses of the STEELMATE T5 air compressor, showing it can inflate car tires, motorcycle tires, bicycle tires, inflatable boats, air mattresses, and basketballs.
Maintenance
- Cleaning: Wipe the exterior of the compressor with a soft, damp cloth. Do not use harsh chemicals or abrasive cleaners.
- Storage: Store the air compressor in a cool, dry place, away from direct sunlight and extreme temperatures. Ensure the power cord and air hose are neatly stowed. The compact size allows for easy storage in a vehicle.

Image: A white car with the STEELMATE T5 air compressor positioned at the rear, illustrating the 10ft long power cord's reach to all tires. The compressor dimensions are also shown as 152mm x 56mm x 152mm.
- Inspection: Periodically check the power cable and air hose for any signs of wear or damage. Do not use the device if any components are damaged.
Troubleshooting
- Compressor does not turn on:
- Check if the power cable is securely connected to the 12V DC socket.
- Ensure the vehicle's engine is running.
- Verify the vehicle's cigarette lighter fuse is not blown.
- Slow inflation or no air output:
- Ensure the air hose is tightly screwed onto the valve stem.
- Check for any kinks or blockages in the air hose.
- Verify the preset pressure is correctly set and higher than the current pressure.
- Compressor overheats:
- Allow the unit to cool down for at least 10-15 minutes after 10-15 minutes of continuous use.
- Ensure adequate ventilation around the compressor during operation.
- Inaccurate pressure reading:
- Ensure the air hose connection is secure and there are no leaks.
- Recalibrate by disconnecting and reconnecting the power.
Specifications
| Brand | STEEL MATE |
| Model Name | T5 |
| Voltage | 12 Volts |
| Power Source | Air Powered |
| Recommended Uses | Tire Inflation |
| Noise Level | 92 Decibels |
| Special Features | Automatic Shut-off, Digital Display, Portable, Quick Inflation |
| Included Components | Air Compressor Pump |
| Maximum Power | 12 |
| Style | Portable |
| Product Dimensions (LxWxH) | 15.2 x 5.6 x 15.2 Centimeters |
| Item Weight | 862 g |
| UPC | 769773761838 |
Warranty and Support
For warranty information or technical support, please refer to the product packaging or contact STEELMATE customer service directly. Contact details can typically be found on the manufacturer's official website or on the product's purchase page.