Introduction
Thank you for choosing the CarBest CA-990 Vehicle Security Paging Car Alarm System. This system is designed to provide advanced security and convenience for your vehicle. It features a two-way communication remote with an LCD display, allowing you to monitor your vehicle's status and control various functions from a distance.
For optimal performance and safety, please read this manual thoroughly before installation and operation. Professional installation by a qualified technician is highly recommended due to the complexity of vehicle wiring systems.
Package Contents
Before beginning installation, please verify that all components are present in your package:
- Main Control Unit
- Two-Way LCD Remote Controls (2 units)
- Siren
- Wiring Harnesses
- Shock Sensor
- Antenna Module
- Relay
- User Manual

Image: Overview of the CarBest CA-990 car alarm system components.

Image: The two-way LCD remote controls for the CarBest CA-990 system.
Setup and Installation
Installation of the CarBest CA-990 system involves electrical wiring and integration with your vehicle's existing systems. Due to the complexity, professional installation by a qualified technician is strongly recommended to ensure proper functionality and to avoid damage to your vehicle or the alarm system.
Key Installation Considerations:
- Main Control Unit Placement: Securely mount the main control unit in a hidden, dry location within the vehicle, away from direct heat or moisture.
- Siren Mounting: Mount the siren in the engine bay, facing downwards to prevent water accumulation, and away from heat sources.
- Wiring Connections: All wiring connections must be secure and properly insulated. Refer to the detailed wiring diagrams provided in the manual for specific connections to your vehicle's electrical system (e.g., ignition, door triggers, trunk trigger, parking lights, siren output).
- Shock Sensor Adjustment: The shock sensor sensitivity can be adjusted to prevent false alarms while ensuring adequate protection.
- Antenna Placement: Position the antenna module for optimal signal reception, typically on the windshield or dashboard, away from metal obstructions.

Image: Detailed wiring diagrams for various door lock systems and actuator connections.

Image: Comprehensive wiring diagram for the main system and door lock integration.
Operating Instructions
The CarBest CA-990 system is operated using the two-way LCD remote control. The remote provides visual feedback on your vehicle's status and allows for various functions.
Remote Control Functions:

Image: Table of button configurations and LCD icons for the remote control.
| Button | Duration | Function | Condition |
|---|---|---|---|
| Lock Icon | 0.5 sec | Arm and Lock | Non-driving |
| Lock Icon | 2.0 sec | Panic Mode | Anytime |
| Unlock Icon | 0.5 sec | Disarm and Unlock | Non-driving |
| Trunk Icon | 2.0 sec | Trunk Release | Non-driving |
| Car Icon | 0.5 sec | Remote Query | Anytime |
| Car Icon | 2.0 sec | Auxiliary Channel 5 Output | Anytime |
| Lock + Car Icons | 0.5 sec | Remote Start Timer Mode | Non-driving, Armed |
| Lock + Car Icons | 2.0 sec | Remote Start ON/OFF | Driving |
| Unlock + Car Icons | 0.5 sec | Anti-robbery | Driving |
| Unlock + Car Icons | 2.0 sec | Unlock | Anytime |
| Star Icon | 0.5 sec | Turbo Mode | Anytime |
| Star Icon | 2.0 sec | To Activate Setup Menu | Anytime |
| Lock + Star Icons | 0.5 sec | Keylock ON/OFF | Anytime |
| Unlock + Star Icons | 0.5 sec | Hours or Minutes Increase | Correction of Real-time Clock, Remote Start Set-up for Personal Alarm |
| Unlock + Star Icons | 2.0 sec | Hours or Minutes Decrease | Correction of Real-time Clock, Remote Start Set-up for Personal Alarm |
| Trunk + Star Icons | 0.5 sec | Function Select | Menu Activated |
| Trunk + Star Icons | 2.0 sec | Function Cancel | Menu Activated |
| Car + Star Icons | 0.5 sec | Function Shift | Menu Activated |
Note: "+" means press the buttons in sequence within 2 seconds.
Demonstration Video:
Video: This video demonstrates key functions of the CarBest two-way car alarm, including locking/unlocking, shocking warning, side door warning, illegal engine start warning, and trunk release.
Maintenance
- Remote Control Battery: The remote control requires 1 AAA battery. When the battery is low, the LCD screen will display a low battery indicator. Replace the battery promptly to ensure reliable operation.
- Cleaning: Use a soft, dry cloth to clean the remote control and main unit. Avoid using harsh chemicals or abrasive cleaners.
- System Checks: Periodically test the alarm functions (arming, disarming, shock sensor) to ensure the system is operating correctly.
Troubleshooting
If you encounter issues with your CarBest CA-990 system, refer to the following common troubleshooting steps:
- Remote Control Not Responding:
- Check the remote control battery and replace if necessary.
- Ensure you are within the operating range of the system.
- Verify that the remote is properly paired with the main unit. Refer to the pairing instructions in the full manual if available.
- Disarm Function Fails / Doors Do Not Unlock:
- This can sometimes be resolved by resetting the system. Consult a professional installer for guidance on system resets.
- Check for any loose wiring connections to the door lock actuators.
- Remote Start Issues:
- Ensure the vehicle is in neutral (for manual transmissions) or park (for automatic transmissions) and the parking brake is engaged.
- Verify all safety interlocks (e.g., hood pin switch) are correctly installed and functioning.
- A bypass module may be required for some vehicles with immobilizer systems. Confirm compatibility with your vehicle.
- False Alarms:
- Adjust the sensitivity of the shock sensor.
- Ensure all door, hood, and trunk sensors are properly closed and not faulty.
For persistent issues or complex problems, it is recommended to contact a professional car alarm installer or the manufacturer's support.
Specifications
| Feature | Detail |
|---|---|
| Model Number | CA-990 |
| Item Weight | 2.2 pounds |
| Product Dimensions | 9.06 x 5.91 x 2.76 inches |
| Batteries Required | 1 AAA battery (for remote) |
| Wireless Remote | Yes |
| Maximum Range | 150 Meters |
| Noise Level (Siren) | 120 Decibels |
Limited Warranty
This CarBest CA-990 Alarm & Starter product is warranted against manufacturing defects in material and workmanship for 180 days from the date of purchase from the authorized dealer. During the warranty period, the dealer will repair the product without charging for parts and labor costs.
The warranty does not cover damage or failure caused by or attributed to Acts of God, abuse, misuse, improper or abnormal usage, improper maintenance, lightning or other incidence of excess voltage, or any repairs other than those provided by the dealer's authorized repair facility. When the warranty period expires, the dealer will repair the products only charging the parts cost.

Image: Excerpt from the manual detailing the limited warranty terms.
Support
For further assistance, technical support, or warranty claims, please contact your authorized CarBest dealer or the seller from whom you purchased the product. Ensure you have your purchase information and product model number (CA-990) available when contacting support.





