1. Introduction
The CAREUD M3-C Wireless Motorcycle Tire Pressure Monitoring System (TPMS) is designed to enhance your riding safety by providing real-time monitoring of your motorcycle's tire pressure and temperature. This system helps prevent accidents due to tire failure, extends tire life, and improves fuel efficiency. It is available with either external (WI) or internal (TH) sensors to suit your preference.
Figure 1: CAREUD M3-C TPMS Monitor and Sensor Options
2. Key Features
- Real-time monitoring of tire pressure and temperature.
- Digital LCD display for clear readings.
- Audible and visual alarms for abnormal conditions (high/low pressure, high temperature, quick air leakage, low sensor battery).
- Super waterproof and dust-proof performance for harsh environments.
- Automatic start-up when the motorcycle is in motion.
- High-quality Freescale chip for stable signal, accurate data, and strong anti-interference.
- Built-in explosion-proof aluminum battery with USB fast charging and temperature protection.
- Monitors two tires simultaneously.
- Anti-theft design for external sensors.
Figure 2: Overview of TPMS Features
3. Package Contents
3.1 M3-C WI (External Sensor) Model
Figure 3: M3-C WI Package Contents
- M3-C Monitor Display Unit
- 2 x External Sensors (WI-Black or WI-Silver)
- USB Charging Cable
- 2 x Theftproof Nuts
- Fixed Bracket
- Spanner
- Paste Bracket
- Hexagon Wrench
- Metal Stents
3.2 M3-C TH (Internal Sensor) Model
Figure 4: M3-C TH Package Contents
- M3-C Monitor Display Unit
- 2 x Internal Sensors (TH)
- USB Charging Cable
- Fixed Bracket
- Spanner
- Paste Bracket
- Hexagon Wrench
- Metal Stents
4. Setup and Installation
4.1 Display Unit Installation
- Install the fixed bracket on the steering handle of your motorcycle.
- Tighten the bracket and fix it securely.
- Attach the display unit to the fixed bracket.
Figure 5: Display Unit Installation
Caution: Turn on the power of the display unit first, and then install the sensors. Following this step ensures real-time data display.
4.2 Internal Sensor (TH) Installation
Internal sensors require professional installation at a repair shop as they are mounted inside the tire. Dynamic balancing is needed after installation.
- Prepare the sensor.
- Pull out the original valve, cleaning any residue.
- Mount the sensor into the valve.
- Install the gasket first, then use the tool to install the nut.
- After finishing, install the tire and wheel hub, then re-inflate the tire.
Figure 6: Internal Sensor Installation Steps
4.3 External Sensor (WI) Installation
External sensors can be installed by the user and do not require dynamic balancing.
- Screw the theftproof nuts onto the tire valve stem.
- Tighten the sensor onto the valve stem.
- Tighten the theftproof nut against the sensor by turning it anti-clockwise.
- Use the provided spanner to fix the theftproof nut securely.
Figure 7: External Sensor Installation Steps
5. Operating Instructions
5.1 Real-time Monitoring
The M3-C TPMS provides real-time monitoring of your motorcycle's tire pressure, temperature, and vehicle battery level. All data is automatically updated on the LCD display. In case of any abnormal situation, an audible alarm will sound, and the display will show the specific alert.
Figure 8: Real-time Monitoring in Action
5.2 Automatic Start
The monitor automatically starts up when the motorcycle is started. The sensors automatically transmit data to the display unit, ensuring continuous monitoring without manual intervention.
Figure 9: Automatic Start Feature
5.3 Alarming States and Preset Values
The system is equipped with multiple alarm functions to alert you to potential tire issues. The user preset values are:
- High Pressure Alarming: 3.0 BAR
- Low Pressure Alarming: 2.0 BAR
- High Temperature Alarming: 69°C
When an alarm condition is met, the display will show the corresponding icon and value, flashing with an audible alarm. Press any button to turn off the audible alarm; the icon will continue to flash until the problem is resolved.
Figure 10: Alarming States Display
5.4 Quick Air Leakage Alert
The system can detect a quick tire leakage and prompt an alarm within 3 seconds, significantly reducing the risk of accidents.
Figure 11: Quick Leakage Alarm
6. Maintenance
6.1 Monitor Charging
The display unit features a built-in explosion-proof aluminum battery and supports USB fast charging. Connect the monitor to a USB power source using the provided charging cable.
Figure 12: USB Fast Charging
The monitor has temperature protection for its battery:
- When the display senses the temperature reaches 70°C, it will automatically stop charging.
- When the display senses the temperature reaches 80°C, it pauses and starts to protect itself.
- When the temperature drops back to normal, the display automatically resumes normal monitoring status.
6.2 External Sensor (WI) Battery Replacement
The battery in external sensors is user-replaceable. The sensor battery has been installed before delivery. If you need to replace it:
- Take out the tamper gasket.
- Use a hardware wrench to open the sensor housing.
- Take out the old button battery.
- Put a new battery into the sensor and reassemble.
Figure 13: External Sensor Battery Replacement
6.3 Internal Sensor (TH) Battery
The battery in internal sensors is not designed to be user-replaceable. If the internal sensor battery needs replacement, it requires professional service.
7. Troubleshooting
- Sensors not connecting/displaying data: Ensure the display unit is powered on before installing the sensors. Check that sensors are installed correctly and securely. If issues persist, try re-pairing the sensors according to the device's settings menu (refer to the specific pairing instructions in your monitor's menu, if available).
- Display is dark or not turning on: Ensure the monitor is fully charged using the provided USB cable. Check the brightness settings on the display unit.
- Cannot change settings for a specific tire (e.g., front tire): Navigate through the display unit's menu to find individual tire settings. Some systems may require specific button presses or menu navigation to select and adjust parameters for each tire.
- Inaccurate readings: Ensure sensors are correctly installed and tightened. Verify that the tire pressure is measured with a reliable gauge to compare with the TPMS readings.
- Alarm sounds frequently: Check the preset alarm thresholds (high/low pressure, high temperature) and adjust them if necessary to match your motorcycle's recommended tire specifications.
8. Specifications
8.1 General Specifications
| Attribute | Value |
|---|---|
| Brand Name | CAREUD |
| Model Name | M3-C |
| Item Type | Alarm Systems & Security |
| External Testing Certification | CCC |
| Certification | CE, CCC |
| Origin | Mainland China |
| Frequency | 433.92MHz |
| Is Batteries Included | Yes |
| High-concerned chemical | None |
8.2 Monitor Display Unit
| Attribute | Value |
|---|---|
| Item Length | 42mm |
| Item Width | 42mm |
| Item Height | 27mm |
| Item Weight | 0.32kg (Package Weight) |
| Battery Type | Built-in explosion-proof aluminum battery |
| Charging | USB Fast Charging |
Figure 14: Monitor Dimensions and Display Elements
8.3 Internal Sensor (TH) Specifications
| Attribute | Value |
|---|---|
| Installation | Repair shop install |
| Dynamic Balance Needed | Yes |
| Battery Life | 2-3 years |
| Battery Replacement | Can't be replaced by user |
| Measurement Accuracy | <0.01 BAR |
| Pressure Sensitivity | 0-8 BAR |
| Operating Temperature | -40°C to +85°C |
Figure 15: Internal Sensor Dimensions
8.4 External Sensor (WI) Specifications
| Attribute | Value |
|---|---|
| Installation | User installs |
| Dynamic Balance Needed | No |
| Battery Life | 1 year (driving four hours a day) |
| Battery Replacement | User replaces |
| Measurement Accuracy | <0.1 BAR |
| Pressure Sensitivity | 0-8 BAR |
| Dimensions | 19mm diameter, 15mm height |
Figure 16: External Sensor Dimensions
9. User Tips
- Initial Setup: Always power on the display unit before installing the sensors to ensure proper pairing and immediate data display.
- Sensor Connection: If sensors are not connecting, double-check their installation and ensure the display is powered. Refer to the troubleshooting section for re-pairing steps if necessary.
- Display Visibility: If the screen appears dark, ensure the monitor is fully charged. Adjust the display brightness settings if available.
- Tire Configuration: If you encounter difficulty changing settings for individual tires, explore the monitor's menu options thoroughly. Some systems have specific sub-menus for front and rear tire adjustments.
- Regular Checks: Even with TPMS, it's good practice to periodically check tire pressure with a manual gauge for cross-verification.
10. Warranty and Support
For warranty information and technical support, please refer to the documentation provided with your purchase or contact CAREUD customer service. Keep your proof of purchase for warranty claims.
