Automotive electronics OEM/ODM
Founded in 2016, Zhuhai Sanmu Technology specializes in vehicle monitoring and automotive electronics, offering cameras, dash cams, monitors, radars and TPMS solutions.

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Popular Categories
Parking Sensor(Radar)
Dash Camera
Vehicle monitoring system
Car camera
Wireless monitoring system
Tire Pressure Monitoring System
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Product Advantages
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Fast Market Response

Rapid sampling (3-5 days)

Bulk delivery (5-8 days)

Rapid product upgrades based on market trends

Global Market Experience

Exported to Europe, America, Southeast Asia, Middle East, etc.Understanding of regional market preferences

International Certifications

Certified by CE, FCC and RoHS, IP67/IP68 waterproof and dustproof rating.

OEM & ODM Services

Supports OEM manufacturing, ODM product development and customization, small batch orders, and fast delivery.

ZHUHAI SANMU TECHNOLOGY CO., LTD.

Founded in 2016, Zhuhai Sanmu Technology Co., Ltd. focuses on in-vehicle monitoring and automotive electronics, committed to providing global customers with high-quality, intelligent in-vehicle products and solutions. The company's core products include in-vehicle cameras, dashcams, in-vehicle displays, reversing radars, tire pressure monitoring systems, and navigation systems, widely used in various passenger vehicles and other scenarios.

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We prioritize quality and safety, and all our products have obtained international authoritative certifications such as CE, FCC, RoHS, IP67/IP68, and E-mark, fully meeting the stringent requirements of different markets for product compliance and environmental adaptability.

As a flexible partner, Sanmu Technology offers comprehensive OEM/ODM customization services, supports small-batch orders, responds quickly to customer needs, ensures efficient delivery, and helps customers seize market opportunities. Choose Sanmu Technology and become your trusted one-stop solution partner in the field of automotive electronics.

Certification 
Certified Quality. Reliable Partnership.
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  • IP67-waterproof
  • FCC-360-panoramic-system
  • CE---Desensitization
  • IP68
  • RoHS
  • Dashcam---CE
  • Camera---CE
Numbers Prove Strength
Each set of numbers reflects long-term dedication and professional competence built through consistent effort and strategic excellence over many years.
Years of Experience
+
Countries & Regions Served
+
Partners Worldwide
+
Standard products are shipped 24 hours a day, customized products take 3-5 days for sampling, and bulk orders take 5-10 days
Provide Professional OEM/ODM Services
One-on-one solution provided, quote in 3 minutes
Solution & Quotation
Free samples, 1 day sample turnaround
Sampling & Confirmation
Full inspection passed, logistics arranged for shipment
Quality Inspection & Shipment
Production completed in 1-3 days after sample confirmation
Mass Production
Submit your requirements online
Consultation & Discussion
Automotive Aftermarket Chains
OEM / ODM Brands
Commercial vehicle manufacturers
Wholesalers
Sanmu Technology Is Your Reliable Choice.
They Choose Us
Logistics companies
Public transport operators
Distributors
In-vehicle Infotainment Suppliers
Cross-border Sellers
Vehicle Electronics Importers
Aftermarket Retrofit Companies
Solution
Partner Directly with a Professional Manufacturer!
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Sanmu Company delivers reliable and innovative ADAS dashcam products that align perfectly with our business needs. The image quality and intelligent alert systems provide real value to our clients, helping improve road safety and compliance. We are particularly satisfied with their product consistency and after-sales service. Communication is smooth, and they are open to feedback and customization requests. Working with Sanmu has strengthened our product offering in the European market, and we are pleased with the results of this partnership.
Sophie Dubois
French
Our cooperation with Sanmu Company has been very successful. Their ADAS dashcam solutions are well-suited for large-scale fleet deployments, offering stable performance and accurate data collection. The systems handle high temperatures well, which is essential for our region. Installation is straightforward, and the user interface is intuitive for drivers and fleet managers alike. Sanmu’s professionalism and responsiveness give us confidence in long-term collaboration. We highly value their ability to adapt to our market requirements.
Ahmed Al-Farsi
UAE
Sanmu offers customized solutions for different car models, precisely adapting to the unique needs of each model.
Get clear answers and the support you need for a smoother partnership.
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Frequently 
asking questions
  • Mobile Fleet Apps for iOS and Android: Accessing Fleet Cloud Data Anywhere

    2026-08-12

    Learn how iOS and Android fleet apps extend cloud fleet management beyond the desktop. This guide examines mobile dashboards, alerts, permissions, trip information, TPMS visibility, secure account access and practical deployment considerations for fleet managers, dispatchers, technicians and other authorized users who need reliable fleet information while working remotely or in the field.【detailed】

  • Fleet Cloud Platform FAQ: Mobile Apps, Multi-User Access, Pricing, Data and API Integration

    2026-08-12

    A practical FAQ guide to fleet cloud platforms, covering iOS and Android mobile access, shared fleet administration, subscription pricing, cloud data retention, report exports, driving and trip analytics, TPMS information, and API integration. It explains the questions fleet managers should ask when evaluating a connected fleet platform and how these capabilities affect daily operations, collaboration, reporting, and system integration.【detailed】

  • Dash Cam Loop Recording and Overwrite: What Happens When the SD Card Is Full?

    2026-08-13

    Dash Cam Loop Recording: Will It Automatically Overwrite Old Files?
    Yes, most modern dash cams are designed to use Loop Recording. Instead of creating one enormous video, the camera saves footage as short sequential files. When the normal recording area becomes full, an Overwrite Function typically replaces the oldest unlocked normal clip with a new one.

    Why loop recording matters
    Without recycling, a full memory card could prevent new routine footage from being saved. Loop Recording turns finite storage into a rolling history of recent driving. The length of that history depends on SD Card Storage Capacity and the amount of data generated by the camera.

    What affects how quickly files are overwritten?
    Dash Cam Resolution is a major factor. 4K generally uses more storage than 2K or 1080P, while bitrate, codec, frame rate and extra camera channels also change file size. A larger card extends the retention window before the Overwrite Function reaches older normal clips.

    Are crash files overwritten too?
    A G-Sensor can detect abrupt movement or impact and trigger an Emergency Event Lock. The resulting file may be placed in a protected category so ordinary recycling does not immediately remove it. This Crash Footage Protection is useful, but it should not be treated as permanent archival storage.

    If too many clips become locked, protected storage can eventually fill depending on the camera design. Sensitivity that is set too high can also create unnecessary event files. Review important recordings and copy genuine incident evidence to another device.

    What about parking recordings?
    Parking Mode may create additional normal or event files while the engine is off. Motion, impact, time-lapse and low-bitrate modes generate different amounts of data. Drivers who use parking monitoring extensively may benefit from a larger supported high-endurance memory card.

    Does phone access change overwrite behavior?
    Remote Live View or local app access does not necessarily change how the memory card recycles video. Remote functions can help users view or download footage, but the camera's local retention rules still apply unless a specific cloud service also uploads selected files.

    A reliable Dash Cam FAQ should make one distinction clear: routine footage is designed to cycle, while event footage is intended to receive additional protection. Check your model's manual for folder limits and overwrite rules.

    For best results, match SD Card Storage Capacity to the supported specification, consider the storage impact of Dash Cam Resolution, configure Parking Mode carefully, and verify Remote Live View requirements. Test the G-Sensor, confirm Emergency Event Lock behavior, and back up files requiring Crash Footage Protection. These checks answer one of the most important questions in any Dash Cam FAQ.【detailed】

  • 64GB vs 128GB Dash Cam Storage: How Much Video Can Your SD Card Hold?

    2026-08-13

    How Much Dash Cam Video Can a 64GB or 128GB SD Card Store?
    SD Card Storage Capacity determines how much footage remains available before normal files begin recycling. There is no universal number of hours for a 64GB or 128GB card because storage use depends heavily on Dash Cam Resolution, bitrate, codec, frame rate, audio, and whether front and rear cameras record simultaneously.

    Why resolution changes recording time
    1080P normally creates smaller files than 2K or 4K when other encoding settings are comparable. Higher Dash Cam Resolution provides more image information but usually increases data consumption. Efficient codecs can reduce file size, while higher bitrates can increase detail and storage demand.

    64GB versus 128GB
    Under identical recording settings, 128GB provides approximately twice the raw capacity of 64GB. Actual usable capacity is lower after formatting and file-system overhead. The safest way to estimate hours is to check the camera's stated bitrate or manufacturer's recording-time table for the exact model and channel configuration.

    Why the card does not simply stop when full
    Loop Recording allows the camera to keep operating by creating sequential clips. When normal storage reaches its limit, the Overwrite Function removes the oldest unlocked normal file to make room for new video. This design means capacity determines how far back routine footage remains available rather than how long the camera can operate.

    Protected files need separate attention
    A G-Sensor can detect a sudden impact and trigger an Emergency Event Lock. Locked clips support Crash Footage Protection by keeping important video outside the ordinary recycling sequence. However, event storage is not infinite, so critical clips should be backed up promptly.

    Parking and remote features
    Parking Mode can add many additional clips while the vehicle is unattended, reducing the historical window stored on the card. If the dash cam supports Remote Live View, cloud or cellular functions may offer another way to inspect the vehicle, but local recordings still depend on memory capacity and camera settings.

    Choosing the right card
    Use a capacity supported by the dash cam and choose a high-endurance card designed for repeated video writes. Format it according to the manufacturer's instructions and periodically verify that files can be played. These practices help SD Card Storage Capacity remain dependable under continuous recording.

    For a useful Dash Cam FAQ, remember that Loop Recording and the Overwrite Function are expected behaviors, not signs that storage has failed. Parking Mode can increase recording volume, while Remote Live View does not automatically replace local storage. Test the G-Sensor, verify Emergency Event Lock, and back up clips that require long-term Crash Footage Protection. This storage workflow is a core part of any reliable Dash Cam FAQ.【detailed】

  • Does a Dash Cam Record When the Engine Is Off? Complete Parking Mode Guide

    2026-08-11

    Does a Dash Cam Record When the Engine Is Off? Parking Mode Explained
    Whether a dash cam continues recording after the engine is switched off depends on its Parking Mode, power source, and configuration. Most cameras powered only by an ignition-switched accessory socket shut down when the vehicle turns off. A parking-capable installation can keep monitoring the vehicle with controlled power consumption.

    Common parking recording methods
    Impact-triggered parking recording wakes or saves footage when the G-Sensor detects a shock. Motion-triggered systems record when movement is detected near the vehicle. Time-lapse parking captures frames at intervals, while low-bitrate modes may record continuously at reduced data rates. Each approach affects SD Card Storage Capacity differently.

    Power and battery protection
    Parking monitoring commonly uses a compatible hardwire kit or dedicated battery pack. A hardwire kit may include low-voltage cutoff protection designed to stop drawing power before the vehicle battery falls below a configured threshold. Installation requirements vary by vehicle and camera, so the manufacturer's electrical specifications should be followed.

    What happens when an impact occurs?
    When a configured G-Sensor threshold is reached, the dash cam can create an event recording. An Emergency Event Lock marks or moves the clip so ordinary recycling is less likely to remove it. This Crash Footage Protection is especially useful when the driver is away from the vehicle.

    Storage and automatic recycling
    Loop Recording divides normal video into manageable clips. When normal storage is full, the Overwrite Function replaces older unlocked clips. A 128GB card generally provides about twice the nominal capacity of a 64GB card, but actual hours depend on Dash Cam Resolution, bitrate, codec, frame rate, and the number of cameras recording.

    Can parking footage be viewed remotely?
    Remote Live View requires more than basic local Wi-Fi. A cloud-capable or cellular-connected camera may allow a phone to access live video while the vehicle is elsewhere, subject to connectivity, service plans, and power availability. Standard Wi-Fi models typically require the phone to remain close to the camera.

    For a dependable parked-car setup, verify Parking Mode power requirements, choose adequate SD Card Storage Capacity, and test event sensitivity. Also confirm that Loop Recording and the Overwrite Function do not recycle protected events unexpectedly. A good Dash Cam FAQ should distinguish normal recordings from locked event files.

    Resolution also matters: higher Dash Cam Resolution can increase detail but consumes more storage. If your system includes Remote Live View, confirm its network requirements. Finally, test the Emergency Event Lock and understand how Crash Footage Protection handles locked-file limits.【detailed】

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Sanmu Technology leverages 16 years of automotive electronics experience and strong in-house manufacturing to provide reliable vehicle monitoring solutions. Certified by CE, FCC, RoHS, IP67/IP68, we ensure strict quality control. Flexible OEM/ODM, low MOQ, and fast delivery help partners respond quickly and stay competitive.
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Gary Peng
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6th Floor, Building A, No. 16 Jinxing Road, Tangjiawan Town, Xiangzhou District, Zhuhai City, Guangdong 
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