Hardware kit for the video recorder Xiaomi 70: appointment and installation

Buying a modern car DVR often raises the question of the need for additional accessories that are sold separately. One of these components is the so-called hardware kit, or hardware connection kit. For popular models such as the Xiaomi 70mai, this element plays a critical role in ensuring the stable operation of the device.

Unlike a standard power cable that connects to a lighter, this kit allows you to constantly connect to the on-board network of the car, which gives you access to advanced features that are not available in normal use, and understanding how this module works will help you avoid problems with battery discharge and loss of important records.

In this article, we will discuss in detail what this kit is, what features it activates and how to install it correctly. You will learn about the intricacies of setting up parking mode and the peculiarities of interaction with the registrar software. The information will be useful for both beginners and experienced users of Xiaomi equipment.

What is a Hardware Kit and its difference from a conventional cable

Most Xiaomi 70mai recorders include a cable with a USB Type-C or Micro-USB connector that is designed to connect to the lighter's socket, a method that is convenient for its simplicity, but has significant limitations. The device only works when there is a voltage in the ignition lock, and cannot function autonomously after the engine is turned off.

The hardware kit is a dedicated adapter cable that connects directly to the fuse box of the car, and inside this cable is a special controller, often called a lowering module, which converts the on-board voltage of the car (usually 12V or 24V) into a stable 5V, necessary for the electronics of the recorder.

The main difference is that there are three wires instead of the two standard wires, and besides the plus and minus, there's a third wire that's responsible for detecting ignition, and it's this wire that tells the recorder whether the engine is on or off, which allows the device to automatically switch between recording modes.

• 🚗 Direct Connection: Hiding wires in the cabin skin, providing an aesthetic look.
• 🔌 Three contacts: ACC, B+ (constant plus and GND (land, which gives full control over food.
• 🛡️ Battery protection: Built-in controller shuts down power when voltage drops below a safe threshold.

⚠️ Note: Using non-original cables without a built-in step-down module can cause the DVR matrix or processor to burn due to voltage surges in the onboard network.

Key functions: Parking and monitoring

The main reason why users buy a hardware kit is to enable parking, and in this mode, the DVR continues to work even after you have turned off the engine and closed the car, allowing you to record incidents while the car is parked.

There are two main types of parking recording that are becoming available: the first is motion detection, where the camera only starts writing when it detects activity in the frame; the second, more reliable option is the recording of the impact sensor (G-sensor), which responds to tremors or vibrations of the car body.

To do this, the recorder needs to be powered continuously. The ACC wire in the hardware kit is "signaled." When you turn off the ignition, the voltage on that wire is gone, and the recorder realizes that parking is on, and it doesn't turn off, but goes into standby mode or continues recording depending on the settings in the 70mai application.

It is important to note that parking mode also requires a high-speed memory card and, in some models, an internal battery or external power bank if the battery is not enough for long-term operation.

• 🎥 Time-lapse: Low frame rate (1 frame per second) to save space on the map.
• 🔔 Notifications: Sending push notifications to the smartphone when the shock sensor is triggered (Wi-Fi module is required).
• 🔋 Charge control: Automatic shutdown at low charge of the battery of the car.

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To save the battery charge of the car, set the shutdown threshold in the application to 11.8V or 12.0V. This ensures that you can start the engine even after several days of downtime.

Protecting the car battery from deep discharge

One of the biggest fears owners have when connecting electronics directly to the battery is the risk of draining the battery to zero. Hardware kit for Xiaomi 70mai solves this problem with an intelligent voltage monitoring system. Inside the module is an algorithm that constantly measures the voltage of the onboard network.

The system typically has two trigger thresholds: the first threshold (e.g. 11.6V) is a warning threshold, and the second threshold (e.g. 11.4V) is a critical threshold. When the critical threshold is reached, the controller physically breaks the power circuit, stopping the DVR from supplying power, which retains enough charge to start the engine with a starter.

Note that voltage readings may vary depending on the quality of the terminals and the length of the wires, so manufacturers recommend checking the actual voltage with a multimeter and, if possible, calibrating the settings through the application, if the recorder model allows it.

Long-term parking with the parking mode on still consumes charge. If you plan to leave the car at the airport for a week, it is better to turn off the power of the receptionist manually or be sure of the serviceability and capacity of your battery.

⚠️ Warning: On older cars with a worn-out battery, even short-term parking operation can lead to startup problems.Always assess the condition of your battery before installing a permanent power supply.

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The main function of the hardware kit is not just power supply, but intelligent energy management to protect the vehicle’s ability to start.

Compatibility and completeness for different models

Xiaomi 70mai's line of DVRs is extensive, and different models may require different types of connectivity. Hardware kit is often versatile, but the connector that is inserted into the recorder itself must match the device model. Type-C connectors are the most common, but there are specific proprietary connectors.

The standard package usually includes the cable itself, a set of fuses of different denominations (usually 10A and 15A) and instructions. fuses are necessary to connect to the car's fusible inserts. It is important to use a fuse with a nominal value specified in the instructions to avoid overheating the wiring.

Some models, such as the 70mai A800S or A500S, have built-in GPS modules and require stable power to properly operate telemetry. Using a high-quality hardware kit ensures that there is no interference that can occur when using long adapters in a lighter.

When buying, be sure to check the hardware kit article with your device model. An improperly selected cable may simply not fit the connector or not have the necessary number of contacts to transmit control signals.

Instructions for installation and connection

Installing a hardware kit requires minimal technical skill and accuracy. The process begins with finding the right fuse in the car block. You need a fuse that only voltages when you turn on the ignition (for the ACC wire) and one that always has voltage (for the B+ wire).

You can use a multimeter or tester to search, turn on the ignition and check the fuses, for example, those responsible for a lighter or a tape recorder, which are usually powered through the ACC. For a permanent plus, you can use the fuses of dimensions, cabin lighting or alarms.

Once the connection points are identified, the wires must be cleaned or special tap fuses, which are often included or purchased separately, are laid under the torpedo and windshield rack to the recorder's installation site.

Grounding (GND wire) is best attached to a metal bolt on the car body, having previously cleaned the contact from the paint for a reliable connection. Poor ground contact can lead to interference on the video or incorrect operation of the sensors.

• 🔍 Search: Find free slots in the fuse block.
• 🔧 Installation: Use plastic shoulder blades to avoid damaging clips of the skin.
• ✅ Check: Make sure the recorder is switched on and off along with the ignition.

⚠️ Warning: Never connect wires by twisting and insulating. Use only soldering or certified car connectors, as vibration in the car can disrupt contact and cause sparkling.

Configure via the 70mai app

After you physically install the hardware kit, you need to set up the software part correctly. Connect your smartphone to the DVR's Wi-Fi network and launch the 70mai application. In the device settings section, find the item associated with the parking monitoring or motion detector.

You can select the sensitivity of the G sensor here, and for parking, it is recommended to set a medium or high value to record even light touches, and turn on the timer or cyclic recording function if it is not activated by default.

Some models allow you to adjust the recording duration after the ignition is turned off, for example, you can set the recording within 30 minutes after parking, even if there were no impacts, this is useful for monitoring the actions of the driver or passengers immediately after a stop.

Regularly check the status of the memory card through the application. Parking mode actively uses the resource of cyclic overwriting, so the wear of the card can occur faster. Formatting the card once a month will help avoid write errors.