Parking surveillance, time-lapse photography and motion detection are the corresponding working modes of this model of Dash Cam for different parking security scenarios. The Dash Cam supports the following functions alone or all enabled after detecting the vehicle flameout, to guard your vehicle in all aspects:

1. Collision detection: The Dash Cam will be in standby mode without recording after flameout, but when the built-in gravity sensor (G-sensor) detects abnormal vibration of the vehicle (usually the vehicle is collided), it triggers the recording of a 30-second-long parking surveillance video, and stores it in the parking surveillance video folder of the device album.

2. Motion detection: The Dash Cam will be in standby mode without recording when flameout. When the image algorithm running continuously on the Dash Cam detects a threatening scene to the vehicle and determines that the threat level has reached the level that needs to be recorded, it will trigger the recording of a 30-second-long parking surveillance video and store it in the parking surveillance video folder of the device album.

3. Time-lapse photography: When this function is turned on, the Dash Cam continuously shoots frames at a sampling rate of one frame per second (when the video recording frame rate is set to 30 fps) or one frame every 500 milliseconds (when the video recording frame rate is set to 60 fps) when the after flameout, and then combines them into a 30 fps or 60 fps video file, i.e. time-lapse photography video, and stores it in the time-lapse photography video folder of the device album. Time-lapse photography can continuously record the situation in the field of view of the Dash Cam, and playback the video at a speed equivalent to thirty times the real-world time flow, in case there is an abnormal event, it can well record the entire cause and effect as proof of evidence.

Note: If you installed the optional 4G parking surveillance cable for the Dash Cam, then the parking surveillance events triggered by collision detection or motion detection will be instantly sent to your phone via alarm message push to remind you to pay attention to the abnormal situation of your vehicle in time.

This is because the Dash Cam does not detect the parking surveillance cable. In this case, please start troubleshooting with the following:

1. Check whether the parking surveillance cable of the Dash Cam is correctly installed? If you do not have installation experience and firsthand ability, it is recommended to ask a professional to install it at an auto repair and maintenance store;for minority car models, it is recommended to contact 4S store first to get the vehicle fuse box circuit definition information for installation reference.

2. Check whether the parking surveillance cable has poor contact with the fuse box or with the Dash Cam.

The parking surveillance cable is an accessory used by the car Dash Cam in the parking security scenario and plays the following role:

- The cable takes electricity from the vehicle's battery to maintain a constant power supply to the Dash Cam when the vehicle is shut down, supporting the normal operation of parking surveillance, remote surveillance and other functions;

- When the vehicle battery voltage drops to a preset threshold, the power supply to the Dash Cam/4G module will be cut off to prevent low battery power, leading to the failure to start the vehicle.

This model of Dash Cam only supports parking surveillance cable of 70mai brand. You can choose the following models of 70mai parking surveillance cable to use with this model of Dash Cam:

1. 70mai 4G parking surveillance cable. In addition to supporting the parking surveillance function of the Dash Cam, it also enables the Dash Cam to obtain 4G network connection capability, thus enabling 4G network connection related functions, including instant push alarm message notification and video clips to your mobile APP when the Dash Cam triggers recorded parking surveillance video. As a parking surveillance cable accessory, this model supports three voltage protection threshold settings for low battery protection for cars (see specific Q&A below).

2. 70mai parking surveillance cable (USB Type-C power supply connector). This model does not support 4G network connection, if you choose this model, the Dash Cam will not be able to instantly notify you when the recorded parking surveillance video is triggered, but only remind you to use your mobile phone to access the Dash Cam to view the parking surveillance video recordings in the device album when you start the vehicle next time.

4G parking surveillance cable supports to choose three grades for setting the voltage threshold of vehicle battery protection:
• Low - 11.8/23.6 V
• Medium - 12.0/24.0 V
• High - 12.2/24.4 V

Note: The 12V battery trolley supports three-grade setting of 11.8/12.0/12.2V, and the 24V battery trolley supports three-grade setting of 23.6/24.0/24.4V.

You can choose the right battery protection voltage threshold by gradually turning down the grade according to the actual situation such as the capacity and newness of your vehicle battery, to get the longest parking surveillance usage time under the premise of protecting the battery.

Usually for new batteries (less than 2 years old) and large capacity batteries that support start/stop, you can select 'Low - 11.8/23.6 V' to get a longer usage time for parking surveillance (in a typical vehicle with a new start/stop battery installed, collision detection, parking surveillance, and time-lapse photography are all on, and the usage time is measured to be more than 5 days).

If you are not quite sure of the minimum battery voltage required to start your vehicle's engine, just keep the default 'Medium - 12.0/24.0 V' grade. If the battery is seriously aged or the vehicle requires high starting voltage (for example, vehicles with engines with a high number of cylinders such as V6, L6, V8, V12, W12, etc.), battery voltage dropped to 11.8 V may cause failure to start the engine.

This is a result of incorrect wiring of the parking surveillance cable on the vehicle fuse box. This may lead to the failure of the Dash Cam to properly enter the parking surveillance mode after the vehicle flameout. For this situation, it is recommended to consult a 4S store or professional repair store to clarify the wiring method for the constant power supply after flameout of your vehicle.

Note: non-professional changes to the car circuit may lead to battery failure or even vehicle self-ignition and other serious consequences, please be sure to address the parking surveillance cable installation wiring with the help of professional institutions.

The causes of this problem may be the following,

1. The Dash Cam does not turn on the function of collision detection triggering parking surveillance video.

2. In the Dash Cam settings, the collision detection trigger parking surveillance sensitivity setting is too low, you can try to set a higher sensitivity (for the vehicle with good chassis damping effect, it is recommended to set a high sensitivity).

3. In hot weather, the vehicle cabin temperature is too high, the Dash Cam automatically shuts down to protect the device, it will not be able to respond to the collision event to trigger the parking surveillance video after shutdown. You can apply heat insulation film to the windshield to solve this problem, and try to avoid parking the vehicle in direct sunlight for a long time in the hot season.

4. Low vehicle battery power triggers the battery protection function of the parking surveillance cable, and the power is cut off by the Dash Cam. For this situation, please choose the appropriate battery protection voltage threshold grade according to the condition of your own vehicle battery. If the battery is used for a long time and has been aging, please replace the new battery in time. In addition, the frequent start of the vehicle in a short period of time (such as a number of consecutive short-distance driving) will lead to insufficient battery storage, resulting in the battery protection function of the parking surveillance cable triggered soon after the vehicle flameout; in this case, you can start the vehicle to drive/idle for more than 30 minutes to fully charge the battery, and then turn off the vehicle to continue to use the parking surveillance.

5. This is a result of incorrect wiring of the parking surveillance cable on the vehicle fuse box. This can cause the Dash Cam to be shut down when the power supply to the Dash Cam is cut off some time after the vehicle flameout. For this situation, it is recommended to consult a 4S store or professional repair store to clarify the wiring method for the constant power supply after flameout of your vehicle. (Note: non-professional changes to the car circuit may lead to battery failure or even vehicle self-ignition and other serious consequences, please be sure to address the parking surveillance cable installation wiring with the help of professional institutions.)6. Please note that even if the Dash Cam is set up with the highest collision detection sensitivity, for some types of collisions, such as courier drivers riding electric bikes passing by, the cargo box rubs against the parked vehicle at low speed, it is possible that the parking surveillance video will not be triggered. Gravitational acceleration sensors are more sensitive to vibrations caused by heavy objects; if a passing pedestrian or non-motorized vehicle causes damage to a parked vehicle, there is a probability that a relatively light action will not trigger the parking surveillance recording. (Note: Actual testing of a certain SUV model with comfort as a selling point parked on a concrete-hardened surface, with the highest collision detection sensitivity setting, someone pressed a cigarette butt hard on the tire triggered the parking surveillance video.)

Motion detection supports three sensitivity settings of high/medium/low.The difference between each sensitivity grade is in the collision recognition judgment, the higher the sensitivity setting, the lower the threshold value for determining collision.

Either of the following methods can be taken to solve the problem,
1. Reduce the sensitivity setting for collision detection to trigger parking surveillance.
2. In the collision response policy of parking surveillance, set it to delay 5 minutes before responding.

If you have turned on the motion detection function in the Dash Cam settings (Note: The Dash Cam will detect the parking surveillance cable and will recommend turning on this function by default in the beginner's guide step). When the vehicle shuts down and enters the parking surveillance, the Dash Cam will continue to shoot, and the built-in AI algorithm will continue to analyze the scene in the field of view.

If the algorithm determines that the threat level to the vehicle from a moving object in the scene has reached a level that requires recording, the Dash Cam will be instructed to begin recording a 30-second parking surveillance video to be stored in the built-in parking surveillance folder in the Dash Cam. In this type of scenario, usually an object is moving continuously in close range in the field of view of the Dash Cam.

Note: The initial motion detection algorithm can only recognize human-shaped objects, and subsequent upgrades will add recognition of all types of vehicles (including non-motorized vehicles).

Motion detection supports three sensitivity settings of high/medium/low.The difference between sensitivity grades lies in the recognition judgment of 'suspicious scene'. The higher the sensitivity setting, the more lenient the AI algorithm is in screening the appearance of suspicious objects and the lower the requirement for the duration of objects in the field of view.

Note: For the image recognition AI algorithm, the judgment of suspicious scene is a comprehensive logic derived from training. Therefore, the algorithm parameters such as the duration of suspicious objects staying in the field of view are not fixed values and therefore cannot be set by the user.

This is because the scene in the Dash Cam's field of view is not determined as a sufficient threatening scene to require video recording by the AI imaging algorithm. The specific reasons could be,

- Cause 1: The duration of time the person remains in the field of view of the Dash Cam is too short (under the default sensitivity setting in motion detection, it needs to remain in the field of view for more than 20 seconds to trigger the parking surveillance video).

- Cause 2: Human imaging does not meet the requirements of AI algorithm for human recognition. Main scenario:• The person is obscured, which affects the detection effect of the imaging algorithm. For example, when the person is too close to the vehicle and only the part above the abdomen appears in the field of view of the Dash Cam, it is easy to be ignored by the algorithm and lead to missing recognition. (Note: 70mai is continuously improving the recognition capability of AI imaging algorithm, and will subsequently strengthen the recognition of obscured human shapes and increase the recognition of various types of vehicles.)• The person is too far away from the Dash Cam (more than five meters), and the image of the person is too small, which will be judged as low threat and thus will not trigger the parking surveillance video.• Environmental factors, when shooting outward from inside the car, the field of view light situation is complicated, there are occlusions and reflections, such as too dark light or windshield reflections, which can interfere with the recognition algorithm.

- Judgment of the method of motion detection function (depending on the specific vehicle model, installation angle, the actual performance parameters will vary: the difference range in distance is no more than one meter, and the difference range in retention time is no more than 5 seconds),• High sensitivity: about 2-3 meters from the front of the car, stay for about 8 seconds, will trigger the motion detection• Medium sensitivity: about 2-3 meters from the front of the car, stay for about 10 seconds, will trigger the motion detection• Low sensitivity: about 2-3 meters from the front of the car, stay for about 17 seconds, will trigger the motion detection

No, it will not. Unlike the frame comparison principle based motion detection that is commonly used in the industry, the built-in imaging algorithm of this Dash Cam model will make intelligent judgments about the scene in the field of view, and the recording of parking surveillance video will only be truly triggered if the threat level of the scene is large enough as determined by the algorithm; this can greatly reduce the number of useless activity scenes triggering the recording of parking surveillance video, making the motion detection function truly practical in densely populated areas.

For example, in general, scenes with vehicles/people coming and going are not judged as threatening by the algorithm, but only when specific suspicious objects stay in view long enough and close enough to the vehicle. The algorithm determines the threat level of the scene intelligently, not according to a fixed preset length of stay or distance.

In addition, if the same moving object stays in the field of view for a long time, at most two consecutive parking surveillance video recording events will be triggered, and the Dash Cam will then actively ignore the object to avoid repeated recording of parking surveillance video with very low or no value.

The possible reasons are as follows,

1. Low vehicle battery power triggers the battery protection function of the parking surveillance cable, and the power is cut off by the Dash Cam. For this situation, you can start the vehicle to drive / idle for more than thirty to fully charge the battery, and then turn off the engine to continue to use time-lapse photography; if the battery is aging, please replace the new battery in a timely manner. (Note: For vehicles installed with start/stop battery, the fully charged new battery can support this model of Dash Cam to record about one week of time-lapse photography video.)

2. The Dash Cam automatically shuts down to protect the device due to high temperature. For this situation, you can apply heat insulation film to the car glass and try to avoid parking the vehicle in direct sunlight for a long time in the hot season.

3. The Dash Cam triggers the recording of parking surveillance video, or the user controls the Dash Cam to record video remotely via 4G, which will cause interruption of time-lapse photography, once the recording is completed, time-lapse photography will continue and stored as a new clip. (4G will be supported in October 2023.)

If you equip the Dash Cam with 4G parking and parking surveillance cable, and the device is properly networked, when the vehicle is shut down, you can enter the 'Remote Settings' page on the 'Remote Surveillance' page of the mobile APP to switch the on/off status of the collision detection parking surveillance/time-lapse photography functions.

Note: You can click the 'Effective immediately' button to switch the on/off status of these functions immediately; you can also exit the 'Remote Setting' page directly after switching on/off, and then when your mobile phone exits the 'Remote surveillance' page for 5 minutes, the on/off status of these functions will be switched automatically according to your settings.