Introduction
This manual provides detailed instructions for the installation, operation, and maintenance of your EchoMaster PMM-43-PL Rearview Mirror Monitor. This universal, auto-dimming mirror monitor is designed to replace your factory-installed rearview mirror, offering enhanced visibility and safety features. It features a 4.3-inch LCD monitor with dual video inputs and adjustable parking guidelines.
Key Features
- 4.3-inch LCD Monitor: Integrated display for clear viewing.
- Dual Video Inputs: Connect up to two cameras (e.g., front, side, or rear).
- Reverse Trigger Input: Automatically activates the monitor and parking lines when the vehicle is in reverse.
- Adjustable Parking Lines: Provides dynamic guidelines to assist with parking and backing up.
- Auto-Dimming Mirror: Reduces glare from headlights behind you.
- Remote Control Included: For convenient operation of monitor functions.
Product Overview
The EchoMaster PMM-43-PL integrates a display into a rearview mirror, providing a discreet and functional solution for vehicle camera systems.

Figure 1: EchoMaster PMM-43-PL Rearview Mirror Monitor. This image shows the mirror monitor with a backup camera feed active on the left side, displaying a view behind the vehicle with green, yellow, and red parking guidelines. The right side of the mirror functions as a standard rearview mirror.

Figure 2: Technical drawing illustrating the dimensions of the EchoMaster PMM-43-PL. The top view shows a length of 269.70 units and a height of 80.90 units. The side view shows a thickness of 44.51 units, indicating the overall physical size of the mirror monitor.
Setup and Installation
The PMM-43-PL is designed for factory mount replacement. Professional installation is recommended due to the electrical connections and vehicle-specific mounting requirements.
General Installation Steps (Consult a professional installer for detailed vehicle-specific instructions):
- Remove Existing Mirror: Carefully detach the factory rearview mirror from its mount.
- Mount New Mirror: Securely attach the PMM-43-PL to the vehicle's existing mirror mount. Ensure it is stable and provides a clear view.
- Power Connection: Connect the monitor's power cable to a switched 12V power source and ground.
- Video Input Connection: Connect your camera(s) to the dual video inputs on the monitor.
- Reverse Trigger Connection: Connect the reverse trigger wire to the vehicle's reverse light circuit. This enables automatic activation when shifting into reverse.
- Cable Management: Route all cables neatly and securely to prevent interference with vehicle operation.
- Test Functionality: Before finalizing installation, test all functions, including power, video display, reverse trigger, and parking lines.
Note: This device is intended for dashboard mount installation, replacing the factory rearview mirror. Ensure compatibility with your vehicle's mirror mount type.
Operating Instructions
Basic Operation:
- Power On/Off: The monitor typically powers on with the vehicle's ignition. A power button (if present) on the mirror or remote control can manually toggle the display.
- Video Input Selection: Use the buttons on the mirror or the included remote control to switch between Video Input 1 and Video Input 2, if two cameras are connected.
- Reverse Activation: When the vehicle is shifted into reverse, the monitor will automatically display the feed from the connected backup camera and activate the parking lines.
Adjustable Parking Lines:
The PMM-43-PL features adjustable parking lines to assist with precise maneuvering. Consult the remote control or mirror buttons for options to adjust the position, width, or angle of these guidelines to match your vehicle and camera setup.
Auto-Dimming Function:
The mirror automatically adjusts its reflectivity to reduce glare from headlights behind your vehicle, enhancing nighttime driving comfort and safety.
Using the Remote Control:
The included remote control provides convenient access to monitor settings and video input selection. Refer to the remote's markings for specific button functions.
Maintenance
- Cleaning the Mirror: Use a soft, lint-free cloth and a non-abrasive glass cleaner to clean the mirror surface. Avoid spraying cleaner directly onto the mirror; apply it to the cloth first.
- Cleaning the Monitor Screen: For the LCD screen area, use a soft, dry microfiber cloth. For stubborn smudges, lightly dampen the cloth with water or a screen-specific cleaner.
- Cable Inspection: Periodically check all connected cables for signs of wear, damage, or loose connections.
- Environmental Considerations: Avoid exposing the unit to extreme temperatures or direct sunlight for prolonged periods, as this may affect performance and longevity.
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| No image on monitor |
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| Image is distorted or flickering |
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| Parking lines not appearing or incorrect |
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| Remote control not working |
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Specifications
| Feature | Detail |
|---|---|
| Model Number | PMM-43-PL |
| Brand | EchoMaster |
| Screen Size | 4.3 Inches |
| Display Type | LCD |
| Video Inputs | Dual |
| Installation Type | Factory Mount Replacement (Dashboard Mount) |
| Special Features | Adjustable Parking Lines, Auto-Dimming, Reverse Trigger Input, Remote Control |
| Product Dimensions | 11.42 x 5.2 x 3.55 inches (approx. 290 x 132 x 90 mm) |
| Item Weight | 2.11 pounds (approx. 0.96 kg) |
| UPC | 609098821858 |
Warranty and Support
For warranty information, technical support, or service inquiries regarding your EchoMaster PMM-43-PL, please refer to the official EchoMaster website or contact their customer service department. Keep your proof of purchase for warranty claims.
You can find more information about EchoMaster products and support by visiting the EchoMaster Store.





