Introduction
The STEEL MATE Solar Power Tire Pressure Monitoring System (TPMS) is designed to provide drivers with real-time tire pressure and temperature data, ensuring safer driving conditions. This system features a smart LCD display, multiple alarm modes, and convenient charging options. Please read this manual carefully before installation and use to ensure optimal performance and longevity of your device.

Figure 1: Main unit and external sensors of the STEEL MATE TPMS.
Setup Guide
1. Unboxing and Initial Inspection
Carefully remove all components from the packaging. Verify that all items listed in the package contents are present and undamaged. The package typically includes the main display unit, four external sensors, a USB charging cable, a small wrench, anti-theft nuts, and an instruction manual.
Video 1: Unboxing and overview of the STEEL MATE Mini-OneS TPMS components.
2. Initial Charging
Before first use, ensure the main display unit is fully charged. The unit supports two charging methods: solar power and USB charging. For initial setup, it is recommended to charge via USB to ensure a full battery. Connect the provided USB cable to the unit and a power source (e.g., car charger, computer USB port).

Figure 2: The TPMS unit can be charged via its integrated solar panel or a micro USB port.
3. Sensor Installation
Each external sensor is labeled for a specific tire position (e.g., FL for Front Left, FR for Front Right, RL for Rear Left, RR for Rear Right). Install the sensors according to their labels on the corresponding tire valve stems. Use the provided small wrench and anti-theft nuts to secure the sensors firmly. Ensure the valve stem is clean and dry before installation.

Figure 3: Proper installation of the external tire pressure sensor.
4. Monitor Placement
Place the main display unit on your car's dashboard in a location that allows for clear visibility without obstructing your view of the road. The unit comes with a bracket that can be adjusted for optimal viewing angles. Ensure the solar panel faces upwards to receive sunlight for continuous charging.

Figure 4: The TPMS monitor positioned on the car dashboard for easy viewing.
Operating Instructions
1. Display Overview
The smart LCD display shows real-time tire pressure and temperature for all four tires. It also indicates battery level and the selected pressure unit (e.g., PSI, Bar). The display automatically adjusts its backlight for optimal visibility in various lighting conditions.

Figure 5: Detailed view of the TPMS display and control buttons.
2. Alarm Modes
The system is equipped with 6 alarm modes to alert you to potential tire issues:
- Fast Leak Alarm: Alerts when tire pressure drops rapidly.
- High/Low Pressure Alarm: Activates if tire pressure exceeds or falls below preset thresholds.
- High Temperature Alarm: Warns if tire temperature becomes excessively high.
- Sensor Low Voltage Alarm: Indicates when a sensor's battery is low.
- Sensor Data Loss Alarm: Alerts if communication with a sensor is lost.
- Sensor Fault Alarm: Notifies of a malfunction in a sensor.

Figure 6: Visual representation of the different alarm types.
3. Car Bracket Function
The main unit's design incorporates a versatile car bracket function, allowing it to serve as a mobile phone holder. This feature enables horizontal or vertical placement of your smartphone, enhancing navigation and information viewing safety while driving.

Figure 7: The TPMS unit doubles as a convenient phone holder.
4. Scent Refresher Integration
The Mini-OneS TPMS is designed with a slot to add a scent refresher. This allows you to refresh the air in your car, contributing to a pleasant driving environment.

Figure 8: Adding a scent refresher to the TPMS unit.
Maintenance
1. Charging the Main Unit
The main unit can be charged via its solar panel or the micro USB port. For optimal battery life, ensure the solar panel is exposed to sunlight regularly. If the unit's battery is low, connect it to a USB power source for a full charge.
2. Sensor Care
The external sensors are designed to be durable and resistant to various environmental conditions, including water, dust, and extreme temperatures. However, it is recommended to periodically check the sensors for any signs of damage or wear. Ensure they are securely fastened to the valve stems to prevent loss or inaccurate readings.

Figure 9: The sensors are built to withstand various environmental challenges.
Troubleshooting
- Unit Not Powering On: If the unit does not power on, ensure it is fully charged. Connect it to a USB power source for several hours. Some units may arrive with zero charge and require extended initial charging.
- Sensors Not Connecting/Displaying Data: Verify that the sensors are correctly installed on the designated tire positions. Ensure the main unit is powered on and within range. If issues persist, try re-pairing the sensors according to the detailed instructions in the full user manual.
- Sensor Thread Stripping: When installing or removing sensors, apply gentle and even pressure. Over-tightening can damage the threads. If a sensor's threads are stripped, it may need to be replaced.
- Inaccurate Readings: Ensure sensors are clean and free from debris. Check for proper installation. If readings remain inaccurate, consult the full user manual for calibration steps or contact customer support.
Specifications
| Package Dimensions | 6.89 x 4.53 x 3.03 inches |
| Weight | 1.02 Pounds |
| Brand | STEEL MATE |
| Material | Alloy Steel |
| Manufacturer | STEEL MATE |
Warranty and Support
For detailed warranty information and customer support, please refer to the official STEEL MATE website or contact their customer service directly. Keep your purchase receipt as proof of purchase for any warranty claims.