What should care when choose storage device for security cameras?

• Author:Alvin
• Source:www.mvteamcctv.com
• Release on :2016-12-27

In the cctv market, there are many storage devices exist mainly the AHD DVR,SDI-DVR,Hybrid DVR,NVR,CVR,NAS,SAS,cloud technology .When choose the camera and the storage device,the compatibility must be considered mostly.Now,we will discuss something about the compatibility between camera and storage device focused on AHD DVR,SDI-DVR,Hybrid DVR,NVR.

1.HD camera + DVR
No matter HDCVI,HDTVI and AHD camera,they must match the same technology DVR.
Because dahua controled the HDCVI technology,so their DVR not support HDCVI and AHD camera,noly HDCVI camera. With the new series of HDTVI or AHD product comes out,they can matched witch the AHD DVR.It is obvious,the DVR and the HD camera need be the same singal technology,then work well.Need to say,MVTEAM had released the hybrid DVR that five in one mode,which means it can match the different cameras such IPC,ahd camera,CVI camera ,TVI camera and analog camera.

2.SDI-DVR
Since the standard technology level of SDI-DVR ,it is not exist the compatibility problem.

3.NVR system
When you decide to buy the ip camera from one seller ,you’d better buy the NVR at the same time.
It is advised that the IP camera and NVR should be the same brand ,if they are not the same,then the storage should support ONVIF,PSIA,GB/T 28181,RTSP and so on, what’s more ,it must be tested the compatibility firstly . That’s why we often ask the customer whether also need the NVR .So that is not our sales request but our consideration in compatibility.

4.Compress format
When comes to the Compress format,the camera and the storage device must be the same.for example,when the camera adopt h.265 .Then the storage device also should be h.265.

5.Resolution
It will be better the resolution DVR or NVR supported equal or more than the camera .for example,the camera resolution can reach 1.3MP , that means the DVR or NVR should supported equal or more than 1.3MP,or the storage image resolution will not reach to 1.3MP.

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Top 5 Indispensable Features for Outdoor Security Cameras

• Author:Shalyn
• Source:www.mvteamcctv.com
• Release on :2016-12-26

Outdoor security cameras have to be placed in a strategic positions as they need to cover large areas and capture first signs of intrusion. 

A good outdoor security camera should have the following features:
1. Infrared Night Vision
Infrared night vision is vital for every cctv cameras, especially outdoor cams. They should be well equipped with excellent IR night vision technology, this feature plays a very important role in capturing a clear image of the intruder at night.MVTEAM outdoor cameras use 12mil IR Leds+brand chipset(Sony,Aptina) will enhance not only photos of night vision, but span life for infrared night vision function.

2.Waterproof / Weatherproof
An outdoor camera has to withstand all kinds of weather conditions. Moreover, any outdoor cameras must be with this function to be a qualified outdoor camera. An IP rating of 66 (IP66) is considered for best choice.All MVTEAM outdoor cameras are with IP66 Certificate.

3. Vandalism proof
Outdoor cameras usually are with metal bullet housing.In view of those cameras are put outdoor places which lead to be the first target of vandalism by the intrusion. So they must be durable enough that it can withstand hits and sprays and won't be broken so easily. 

4. Image quality
This is the common feature for each security camera. It is always recommended to install high resolution cameras which are producing HD images to give the best possible results. Sometimes, the image quality is also affected by multiple or sharp light situations. So this is about the DWDR function will be come into use.Following is the video record demo of the camera which adpot solution( AR0237+NVP2441H),all MVTEAM outdoor cameras can be made with this solution.

 

Warmly notice: In order to see the real image quality of the 1080P AHD camera,please set the video image quality to 1080P HD when watch the video.

5. Coverage Range

Another crucial element that will must be considered while selecting an outdoor camera. The viewing range of a security camera means it would be enough to cover the entire distance or not.
It's usually depands on the lens and IR distance.For big area,also can choose PTZ cameras.

Those are the top 5 must have features you should take into consideration while choosing the cameras.

The Best Christmas Wishes for You From MVTEAM

• Author:May
• Source:www.mvteamcctv.com
• Release on :2016-12-23

Jingle bells, jingle bells, jingle all the way...Along with this music, Christmas 2017 is on the way...
May this wonderful time of the year touch your heart in a special way. 
May your life be filled with joy and happiness and may each new day bring you moments to cherish. 

All MVTEAM staffs wishing you and your families a Merry Christmas and a wonderful New Year!

MVTEAM IP Camera Project at a Hotel in Dubai

• Author:Melody
• Source:www.mvteamcctv.com
• Release on :2016-12-22

MVTEAM, as a manufacturer and exporter of CCTV security products, has been occupied in the CCTV surveillance field for more than 13 years, we sell the CCTV cameras and DVRs to all of the world.

Here we would like to share one project with MVTEAM IP cameras in Dubai, the business center of the Middle East area.It is a CCTV installation project for a hotel, which is one of the most popular choice for the visitors.

If you also have the demands for the CCTV Security products, please don’t hesitate to contact with us, we will provide the best solution to you.

The Third Mobile APP GOOLINK for MVTEAM 5 in 1 Hybrid DVR

• Author:Judy
• Source:www.mvteamcctv.com
• Release on :2016-12-21

MVTEAM 5 in 1 hybrid DVRs support three kinds APPs to view on mobile phone --TOPSVIEW, XVR, GOOLINK. And it don’t need to change software of DVR, can use the same P2P ID to view directly.Before we introduced TOPSVIEW & XVR, you can check below links to see how to use and the menus of the APPs.
TOPSVIEW:Moblie Phone View APP Topsview for MVTEAM New UI DVR

XVR:XVR---Another P2P APP for MVTEAM 5 in 1 hybrid DVR

Here we introduce you the APP GOOLINK, it can also be downloaded in APP store:

There is no User Account, you can go to the APP menu directly.
But there is a disadvantage that there will be advertisement when you open the APP.

Click the icon "+" to add device by three different ways: scan QR, add manually,or local search

Manually add device interface is same as TOPVIEW and XVR,after add device successfully,the image display is like following.The size of each interface is different, but you can put the channel to the interface you want, like put channel 2 to the top interface.

The disadvantage of the APP is that it can only view 1ch or 4ch in one screen,and there is no next page.For 8ch,16ch DVR, you can only choose the 4 channels you want to view by selecting the channels here:

Compared the three APPs, TOPSVIEW and XVR is better, and they are working stably till now. GOOLINK is a spare choice if you need.You can also download the three APPs to try which you prefer to.

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How to change password for DVR(PAH51 / 53 /55 series)?

• Author:May
• Source:www.mvteamcctv.com
• Release on :2016-12-20

Some of the customers asked about how to reset the password of DVR (PAH51 / 53 /55series).Please know the default password of all our DVR is blank,that means there is no password.Here we will guide you about how to set or change the password of DVR.The steps as below :
Turn on DVR,enter Main Menu-->System-->Account,click "Modify password",input new password and confirm password,then click "OK",the password will be changed successfully.

It is very easy,right? Maybe you will ask if forget the password then how to do?You can find solution at:How to reset AHD DVR Password (PAH53 / 51 /55)?

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How to Remote Backup DVR Video Records by Client Software?

• Author:Grace
• Source:www.mvteamcctv.com
• Release on :2016-12-19

Last week we shared the article about how to backup dvr video records by USB flash disk,many friends like and share the article,thank you so much.Today,we will talk about how to backup DVR video records by client software.Every client software should have the function of remote backup the videos which saved in dvrs' hard disks.With this function,users can remote backup video records at anywhere.Here we use MVTEAM 5 in 1 DVRas example show how to backup by client software.

1-Remote connect the DVR to client software on computer.

The client software of our DVR is CMS3.0,you can download it from http://www.mvteamcctv.com/download.html 

2-Set the download path and video format as below.

Click "SystemManage",set "devicerecording path" and choose "AVI" as save record type.

3-Click "Playback" in menu list of CMS,will see options as below:

Device file means the video records in DVR hard disk(we need choose device file).

Local file means the video records which store on computer.

Then,choose the channels,start time and end time,click search results.

Results show as below:

Choose the video you want to download,click download-->OK,will see the download progress bar in download list.

After finishing the download,can found the backup videos at the save path which was set in step 2.

In this way,you can backup video records at anywhere,no need go to monitoring room,no need usb disk,external hard disk etc.It's very convinient,right?

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What's the RTSP URL of IP Camera and how to play it in VLC Media Player?

• Author:Grace
• Source:www.mvteamcctv.com
• Release on :2016-12-06

RTSP is in short for Real Time Streaming Protocol, it's a network control protocol designed for use in entertainment and communications systems to control streaming media servers.MVTEAM IP Cameras support RTSP video stream,that means user can use media player to watch the live video from anywhere.

 IP Camera MVT-M2780 Live Video on VLC Media Player

What's the RTSP URL of IP Camera?

For MVTEAM IP Cameras,the RTSP URL is rtsp://+IP Address of IPC.For example,the IP address of IPC is 192.168.1.88,then,RTSP address is rtsp://192.168.1.88.

How to play the RTSP Video Stream in VLC Media Player?

Firsly,login the IPC in browser,enable the RTSP function in network setting interface as below:

Secondly,get the IP address of IPC.

Thirdly,download a VLC media player from http://www.videolan.org/vlc/, it's a free player.

Download,install and open the VLC media player.

Then,choose Media-->Open Network Stream-->Network-->Input the RTSP URL as below:

Finally,click play will see the live video of IP cameras. 

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How to solve time display faults for IP video surveillance system?

• Author:Grace
• Source:www.mvteamcctv.com
• Release on :2016-12-02

IP Video surveillance system generally is composed of five parts including front-end monitoring equipment, transmission equipment, back-end storage equipment, control and display equipment.The time display is closely related to the front-end monitoring equipment (IP Camera) and control equipment (NVR), here we analyze the reasons for display time faults from these two parts.

Fault 1:The time show  "1970-X month-X day" or "2000-X month-X day" as below picture 1:

The earliest emergence UNIX operating system set January 1, 1970 as the epoch time (start time) for UNIX TIME,and Java, the database etc. many network devices complied with this constraint, so default time of many devices are January 1, 1970, some devices also set January 1, 2000 as the default time.Two possible reasons for fault 1:

1-IP Camera problem: In many non NVR environment, due to network line failure or IP cameras in a closed network (not connected to the Internet),the time of IPC can not be synchronous with internet,using the system default time(1970-x-x or 2000-x-x ).

2-The NVR problem:When the IP system including a NVR,except network failure problem could cause the time isn't synchronous with internet.If battery of nvr motherboard is low power also may cause the system show default time.Usually,change a new  battery can solve the problem.In rare cases,the problem can not be solved by changing battery,then maybe there is problem with NVR,need send NVR back to factory for maintenance.

Fault 2: The time difference is more than 10mins between display time and standard time. In one system,part of the IP cameras show different display time,max time difference reach 10-20secs.

Although the IP camera, NVR and other network equipment are integrated with real-time clock, but the clock timing accuracy is limited, there may be deviation to cause more than 10mins time difference fault between display and standard time.The most common solutions for fault 2:

1-For the IP cameras and NVR which are connected to internet, the time can be corrected thru NTP (Network Time Protocol). In the IP camera (picture 2) or NVR configuration interface (picture 3), by filling in the network clock server address access to the Internet to calibrate the clock. 

Picture 2:MVTEAM IPC NTP Server Setup

Picture 3:MVTEAM NVR NTP Server Setup

2-If it's a LAN application (IPC can not access the Internet), in order to ensure time synchronization,you need configure NTP server within the network firslty, then input NTP server address to configuration interface of each IPC or NVR .Or you can also periodically connect the NTP server to the Internet, synchronize the local clock source with an external authorized clock source.

3-For the fault " In one system,part of the IP cameras show different display time,max time difference reach 10-20secs.",it's mainly caused by network switching delay.The network transmission data delay exists on each IPC and NVR, and the delay time is not same, generally within 0.5secs can be accepted by users.

Fault 3: The time difference reach a dozen hours between display time and standard time. In one system,part of the IP cameras show different display time,the time difference is more than 10secs,some even more than 10hours.This problem is more complex,Following are the main reasons: 

1-Use different time zones:if there are different models IP cameras and NVRs in one network,and those deivce adopt different time zones,some use the GMT (Greenwich Mean Time), and some use UTC (Coordinated Universal Time), and some may use the DST (Daylight Saving Time). In different devices to retrieve different time format, can not accurately identify or converted out, resulting in a difference of more than a dozen hours during different devices.In this case, need set all devices use the same time zone to solve the problem.

Picture 4:MVTEAM IPC Time Zone Setup 

2-The compatibility issues:Different brand IP cameras ,some are on based on Linux, and some based on AIX, Solaris, Windows platform etc.Those different brand and platform IP cameras are with compatibility issues or inconformity time zone formats.If use them in one network may be resulting in a large time error.

Above are the mainly reasons and some solutions for IP system time display faults,hope it is useful on help you solve the time display faults.

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How to set a name for camera via DVR?

• Author:Flora
• Source:www.mvteamcctv.com
• Release on :2016-12-01

Channel title setup is a basic DVR function,but it's really a useful function which can give different name for each camera to help users distinguish different surveillance place clearly.

Then,how to set a name for camera via DVR? Here take the MVTEAM 5 in 1 Hybrid DVR as example: 

Enter DVR Menu→System→GUI Display→Channel Title→Set,then,you can edit a name for each channel:

Since the cameras and dvr are in MVTEAM showroom,so we usually name the cameras by solution or model number.But if the cameras are installed in users' side,you can name cameras with the place name.For example in a hotel,then,can name camera with entrance,Lobby, Corridor etc.

The time and date display are very important too,just check time display on dvr menu,the live view and record will show date and time on screen.It’s easy to set, but helpful for us to confirm the details, especially on the footage, display it for evidence.

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DVR vs NVR vs HVR - How To Choose?

• Author:Melody
• Source:www.mvteamcctv.com
• Release on :2016-11-29

Nowadays since there are DVR, NVR and HVR, then some customers feel confused regards how to choose the right one. Today we will make this more easier for you. 

Like the names of all these devices imply, they are all meant to record video from security cameras. The main difference between them is what types of cameras they’re meant to play nicely with. 

Digital Video Recorder (DVR) 
The DVR is intended to work with standard analog security cameras system, like HD AHD cameras, HD TVI cameras and HD CVI cameras.This doesn't mean that every DVR works with all of these cameras. These DVR categories simply line up with the previously mentioned types of security cameras.Standard HD AHD cameras are intended to be paired with standard AHD DVRs just as HD-TVI and HD-CVI cameras are intended to be paired with their corresponding TVI DVR and CVI DVR. 

Network Video Recorder (NVR) 
The NVR is paired with IP/network security cameras. There are two different kinds of network video recorder, but don’t worry, they’re both still used with IP cameras.  The first type, and much more common, requires that you connect your IP cameras to your router or a switch. This will mean using the search function on the NVR to “ping” the cameras and then add them to the NVRs device list to begin viewing.  While this is not a very complicated step, it may be one you don’t feel like taking.  
In that case, the second option is to go with an NVR that has built in network or PoE (power over Ethernet) ports. This will allow you to connect your IP cameras directly to the back of your NVR just as you would with a DVR. This will remove the step of having to add them manually to a device list, and it will remove all worries of ensuring that they are connected to your network properly. 

Hybrid Video Recorder (HVR) 
The Hybrid recorder is quickly growing in popularity because of it’s versatility.  Hybrid video recorders (HVR) are compatible with both standard analog signal and digital signal. Here need to change the channel types as the user needs, what we mean is that an 8 channel HVR can be 4ch analog signal and 4ch digital signal, namely can put 4pcs AHD / TVI / Analog / CVI cameras and 4pcs IP cameras. 

Now it’s not just the fact that you get a lot for what you pay for that makes them so attractive to consumers. Since here for the HVR you can connect perfectly acceptable AHD / CVI/ TVI/ Analog channels also the IP cameras. 

It’ll only be a matter of replacing the cameras instead of a DVR and all of your cable.  Depending on the size of your system, this can save you thousands of dollars on the upgrade. 

So to sum up, as MVTEAM has the 5 in 1 Hybrid DVRs, can connect with the Analog camera, AHD cameras, CVI cameras, TVI cameras and IP cameras, if the customers have kinds of above cameras, then the Hybrid would be great option for saving the cost. But just have the IP cameras, then the NVR will be better.  

MVTEAM is the professional CCTV Security Manufacturer, any questions or request to our DVRs, feel free tocontact us. 

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How to supply proper voltage and amperage for CCTV cameras ?

• Author:Flora
• Source:www.mvteamcctv.com
• Release on :2016-11-28

If don't supply proper power to CCTV cameras, the cameras will get signal problem or be burnt! It's important to supply the proper Voltage and Amperage to your CCTV Cameras. Here is the quick reference guide regarding the voltage and amperage. Most of the below data are fit for 99% CCTV cameras since CCTV cameras usually use either a 24VAC or 12VDC voltage.All MVTEAM AHD Cameras and IP Cameras use 12VDC.

Tips: 

Longer Run=more Voltage Drop
Thinner wire(higher gauge)=more Voltage Drop
Larger Amps(more powerful camera)=more Voltage Drop
Higher source voltage=Less Voltage Percentage Drop

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How do Infrared Security Cameras "See" in the dark?

• Author:Shalyn
• Source:www.mvteamcctv.com
• Release on :2016-11-14

While choosing security cameras, the most important element is to consider the lighting condition. A number of CCTV cameras are aimed at operate in normal lighting conditions, but there are cameras which are able to see at night or in low lighting environments. 

Nowadays, infrared security cameras allow you to do more than just you can see,they are not only capture surveillance videos at daytime, but in low lighting environments.Yet,how does it work? 

Infrared light is the light that we cannot see by our eyes. Infrared light has a longer wavelength and lower frequency than regular visible light. But it can be positioned around under darkness, infrared measures the heat coming from objects in the area and this can be read by the camera, even no light required. 

When light is available, infrared cameras will give you a color picture. If it gets darker, the camera has IR cut will automatically switch infrared mode, then pictures become black and white. Below are the image effect of MVTEAM 1080P AHD Camera.

Color picture in daytime

Black&white picture in dark

Infrared security cameras are your best guard for protection. No matter how your environmental conditions are, they are capable of seeing in the dark.

MVTEAM is a professional manufacture & exporter specialized in CCTV products including Infrared IP Camera, Infrared AHD Camera,5 in 1 Hybrid DVR(AHD,TVI,CVI,CVBS),PTZ Camera,AHD DVR Kit,Wireless NVR Kit etc.If you have any inquiry about Infrared security cameras,welcome to contact us.

Common Misunderstandings about IP Surveillance System

• Author:Grace Liu
• Source:www.mvteamcctv.com
• Release on :2016-11-08

People who know less about surveillance products often have below misunderstanding about IP surveillance system.The common misunderstandings maybe misguide you to choose a improper system.Here will list the three common misundersandings for your reference.

Misundersanding 1:The higher the resolution, the better 
Do not blind pursuit of high resolution, high resolution requires high code stream support to be achieved(refer to table 1). The higher the resolution, the larger the code stream, the more hard disk occupied per unit time.Some manufacturers advertise the "high-resolution, low stream" to attract people's attention, but if frames is not enough,image will delay longer time,then high resolution is no use.Secondly, the resolution determines the night vision image quality? actually not, night vision effect is mainly determined by the sensitivity of CMOS chips. 

Format	Resolution	Pixels	Recommend Bandwidth
720P	1280*720	1MP	2M
1024P	1280*1024	1.3MP	3M
1080P	1920*1080	2MP	4-5M
1536P	2048*1536	3MP	5M
4K	3840*2160	8MP	More than 8M

　　   Table 1:Resolution and recommended corresponding code stream　 

　
Misundersanding 2:All ONVIF IP Cameras and NVRs are compatible  
In the era of pursuiting personalization,some consumers want to combine different brands surveillance products according to their own preferences.They think as long as the products supports ONVIF, then can achieve interoperability, compatible use and unified management.However, not entirely correct, if the front-end cameras and back-end NVRs belong to different brands, although most of the functions can be achieved thru ONVIF protocol, but due to the limitations of public agreement, the back-end part will can not operate some functions of cameras.For example: IP address changes, parameter settings, alarm linkageetc., need professionals staff do the settings thru CMS or IE browser.

In addition, there maybe ONVIF docking problem between different brands products and some uncertainties factors still there. Therefore, considering compatibility issues,  it is best to buy the same brand products, because the private protocol docking is the best choice. 

Misundersanding 3:The bigger focal length of lens, the better 
People often want to buy the cameras which can see far, wide, and also must be clear.However, different lens only can achieve the best results within a certain range.For example, focal length of home surveillance cameras are usually divided into 3.6mm, 4mm, 6mm, 8mm, 12mm etc., 3.6mm lens is a wide-angle lens with wider monitoring range fit for a small space,But in open space,wide-angle lens maybe even can not see faces clearly; If want to see the faces,  need select the bigger focal length lens which fit for corridors ; Of course, the choice of how much focal length of the lens mostly are decided by the monitor distance.If the monitoring area is with longer distance and wider range, then it's better to increase the number of cameras.

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What is NTSC, PAL for Analog signal cameras?

• Author:Judy Du
• Source:www.mvteamcctv.com
• Release on :2016-11-07

When confirm an order, we’ll ask customers what TV system in their country is: NTSC or PAL. This is asked for Analog/AHD cameras.Then,what is NTSC, PAL ? 

PAL, NTSC, as well as SECAM, are the world's three analog color TV technology standards. This standard is for television station and television to implement a video and audio signal together. Only under the same technical standards, can be able to achieve the TV signal normal acceptance. This is just like the power outlet and plug, only the same type can be plugged together. China's plug can not be inserted in the UK standard power outlet. 

Color TV image display is composed of mixed signal of three primary colors red, green and blue. The brightness degree of the three colors makes the colorful images. How to deal with the three primary color signals and to achieve broadcast and receive, this needs a certain technical standards, which formed a color TV standard. So comes the three TV system: NTSC (also known as N system, or the United States standard), PAL system (also known as Parr or West Germany, UK), SECAM system (also known as Sekon system or French system). The main differences between these three systems are frame frequency (field frequency), the decomposition rate,signal bandwidth and carrier frequency, relationship of color space conversion,etc. 

PAL (Phase Alternating Line), is a television system developed in 1965, mainly used in China, Hong Kong, the Middle East and Europe. This system is with color bandwidth of 4.43Mh, audio bandwidth of 6.5Mhz, 25 frames per second. 

NTSC (National Television System Committee) standard is made by the United States National Television Development Committee in 1952. The United States, Canada, and Japan, China Taiwan, South Korea, the Philippines and other countries use this standard. This system is with color bandwidth of 3.58Mhz, audio bandwidth of 6.0Mhz, 30 frames per second picture. 

Why NTSC system is 30 frames per second while PAL system is 25 frames per second ? This is because the country's electricity is 110V \ 60HZ, so the TV field frequency signal directly get the frequency AC 60HZ, and two constitute a frame, so 60 divided by 2 is equal to 30, which is the number of TV frames. China's electricity is  220V \ 50HZ, so it’s 25 per second. 

MVTEAM is a professional manufacture & exporter specialized in CCTV products including Megapixel IP Camera, HD-AHD Camera,5 in 1 Hybrid DVR(AHD,TVI,CVI,CVBS),PTZ Camera,AHD DVR Kit,Wireless NVR Kit etc.If you have any inquiry about CCTV products,welcome to contact us.

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Why does camera image seem like snowflake at night?

• Author:Flora Li
• Source:www.mvteamcctv.com
• Release on :2016-11-03

Have you encountered the problem that camera image is quite white, glare, and looks like snowflake at night? 

Here we summarize some reasons for the problem:

1-Poor quality IR Leds,IR distance and angle does not match with the lensSome factories mix use different angles IR leds on one Led board,the benefits is one Led board can use together with different sizes lenses barely.Disadvantage is angle of the Leds and distance are inappropriate with lens.When the angle is not appropriate, prone to flashlight phenomenon or narrow electric phenomenon. When the distance does not match, for example, use 12MM lens, but with 10m~20m IR distance, then there will beblurry, a distant blur and near snowflake. 

That's why MVTEAM doesn't have stocks,for each order,we need confirm lens with customers firstly,then choose matched IR leds to produce.
2-Power supply is not enough 
If distance between power supply and camera is short, a centralized power supply 12V is very convenient. But if it is far away from power supply and camera, it is not suitable. 
Because long distance IR LEDs have large heat, and current attenuation is fast in long cable, power current is not enough to make IR LEDs work. 

3-In a dusty environment 
In the daytime, IR LEDs don’t work, the little dust cannot be seen. But at night, IR LEDs work, so that little dust can be seen by the camera. 

MVTEAM is a professional manufacture & exporter specialized in CCTV products including Megapixel IP Camera, HD-AHD Camera,5 in 1 Hybrid DVR(AHD,TVI,CVI,CVBS),PTZ Camera,AHD DVR Kit,Wireless NVR Kit etc.We have strict quality control on our production line.

Shenzhen MVTEAM Technology Co., LTD 
TEL: (86-0755) 83129382 Fax: (86-0755) 82661081
Email: sales@mvteamcctv.com     

Web: www.mvteamcctv.com