Model number: ST-123EMM-S
Industrial-Grade 12.3” Digital Rearview Mirror System: Advanced Dual-Lens Visibility for Commercial Fleets
The ST-123EMM-S is not just a monitor;it is a professional-grade visibility solution engineered by Standtop for the rigorous demands of the transportation industry.By replacing traditional glass mirrors with an AHD 1080P digital ecosystem, we provide fleet operators with a fail-safe way to eliminate blind spots in any environment.
Unlike standard single-lens mirrors, the ST-123EMM-S features a vertically stacked dual-camera module.
The Upper Lens: Optimized for long-distance rear monitoring, essential for high-speed lane changes.
The Lower Lens: A wide-angle "close-quarter" lens that captures the critical area around the trailer wheels, significantly reducing docking and turning accidents.
The 12.3-inch ultra-wide monitor utilizes IPS technology, ensuring high contrast and consistent color accuracy even at extreme viewing angles. With a brightness of up to 1000 nits, the display remains perfectly visible under direct sunlight, while the intelligent light sensor dims the screen at night to prevent driver fatigue.
Designed for the harshest road conditions, our camera housing is IP69K rated, meaning it can withstand high-pressure steam cleaning and extreme mud/ice buildup. The system operates flawlessly from -30°C to +70°C, ensuring 24/7 uptime for long-haul logistics.
| Screen Size | 12.3 inch IPS Screen (1920 x 720) |
| Video Signal | AHD 1080P/720P Compatible |
| View Modes | Full Screen / Split Screen |
| Camera Housing | Zinc Alloy |
| Camera Sensor | 1/2.8" Sony Starvis IMX307 |
| Viewing angle | 90/150 Degree (H) |
| Waterproof Rating | IP69K |
| Power Input | DC 10V - 36V (Wide Voltage for Trucks/Buses) |

Long-haul trucks,Logistics & fleet vehicles,School & city buses

FAQ Schema
Q1: Can the ST-123EMM-S system completely replace traditional glass mirrors?
A: Yes. The ST-123EMM-S is designed as a full digital replacement. It provides a significantly wider field of view (up to 3x) and eliminates blind spots that physical mirrors cannot cover, especially in heavy rain or low-light conditions.
Q2: How does the dual-lens camera improve driving safety?
A: Our unique dual-lens architecture provides a split-view. The top lens captures distant traffic for safe lane changes, while the bottom lens focuses on the "blind zone" near the vehicle's side and rear wheels, preventing side-swipe accidents during tight turns.
Q3: Is the system compatible with all commercial vehicle voltages?
A: Absolutely. The system supports a wide voltage input of DC 9V - 36V, making it perfectly compatible with heavy-duty trucks, buses, trailers, and RVs without the need for additional voltage converters.
Q4: How does the screen perform under direct sunlight?
A: The 12.3-inch IPS monitor features a high-brightness panel (up to 1000 nits) and an anti-glare coating, ensuring clear visibility even in intense direct sunlight.
Q5: Is the camera durable enough for off-road or construction sites?
A: Yes. The camera housing is made of high-strength zinc alloy with an IP69K waterproof and dustproof rating, the highest industry standard. It is built to withstand high-pressure steam cleaning and extreme vibrations.
The ST-123EMM-S is engineered for straightforward integration into existing fleet structures. Our "Plug-and-Play" AHD cabling ensures a secure, interference-free connection.
Step 1: Mounting the Monitor: The 12.3" ultra-wide display can be mounted on the A-pillar or dashboard using our heavy-duty brackets, ensuring it sits within the driver’s natural line of sight.
Step 2: Camera Positioning: The aerodynamic dual-lens camera is typically installed on the upper side of the vehicle body. Its sleek design reduces wind resistance and fuel consumption.
Step 3: Single-Cable Wiring: We use high-grade 4-pin aviation connectors that carry power, video, and audio in a single cable, simplifying the routing process and enhancing system stability.
Step 4: Smart Triggering: Connect the trigger wire to the vehicle’s turn signals or reverse gear to automatically switch view modes (e.g., full-screen side view when signaling).
Upgrade your vehicles with a safer, smarter rearview system.
✔ Quotation within 24 hours
✔ Samples available
✔ OEM / ODM customization
Contact us now for pricing and project support

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