You could be monitored if your surveillance devices are NOT password protected

• Author:Shalyn
• Source:www.mvteamcctv.com
• Release on :2016-10-27

With the advent of the IOT(Internet of things),malicious hacking attacks will be more frequent and hidden, while developing technology and equipment to prevent IOT controlled by hackers,we have to set up a complex password for the device and regularly update the password.

Surveillance devices such as IP Cameras,DVRs are a big part in IOT,which have the risk to be made as "Chicken" by hackers in attacks.If you haven’t been making the conscious to check and reset your surveillance devices on the basis of the default setting. There will be chances which someone else would utilize it and act it in a bad way. 

Your privacy could be at risk and will draw in some hackers or malwares. Many people are at risk just because they don’t change the settings when they connect their camera to the internet. Here is a situation for home security systems. They all use a pretty generic IP address and unsafe websites from the beginning and all you need to gain access is the username. Under a normally circumstances, the username is always set as “admin” as we all known until you change it yourself. It’s kind of like when you first buy a new router for your WIFI connection. All settings are in default, like password and username. 

There are actually a few websites which are listed the open gates for anyone can completely open it to access into webcams online. This is telling you how worse will it be if you let that happen to you. There are also ways that you can do a simple search and find open webcams. Anyone can do it. If you have ever felt uneasy or that someone may be watching you, you could be right! If you haven’t checked out your security camera settings for a while then you should probably just check and make sure that everything is secure and password protected.

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How to connect alarm devices to CCTV DVR?

• Author:Grace Liu
• Source:www.mvteamcctv.com
• Release on :2016-10-26

Most DVRs have alarm input and output ports,it means the DVRs support alarm devices.Then,do you know how to connect alarm devices to DVR?Here we drew two simple diagrams to explain it.

Usually,the DVR alarm output port is without 12V DC,so you need add power for alarm output device.Diagram 1:

But,if the DVR alarm output port with 12V DC,then only need connect siren to the output interface,no need addtional power.Diagram 2:

How to know the DVR alarm output with or without 12V DC?

Open DVR menu,enter "alarm setting" interface,click "alarm output",then,use multimeter to test 

whether there is 12V DC in DVR alarm output port.If there is 12V DC,connect as diagram 2.If no,connect as diagram 1. By the way,MVTEAM DVRs don't have 12V DC output at alarm ports.

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Three Points On Choosing Alarm Devices For CCTV System

• Author:Shalyn
• Source:www.mvteamcctv.com
• Release on :2016-10-25

CCTV System with external alarm device will be better secure your life anytime and provide good protection for your home and business. These are three things need to be considered before taking action to buy alarm devices for CCTV System.  

1.High sensitivity of motion detection 
We know the level of motion detection is high will detect everything passes by sensibly, even for a small rat jumps will trigger the buzz alarm on DVR. Let alone, a man tiptoe through the coverage of your surveillance. It’s very crucial function for each digital recorder. 

2.Powerful Siren 
It's a wrong concept that installation alarm system to catch the intruders. The purpose of alarm device is to prevent the intrusion; keep away from intrusion. To achieve this purpose, a powerful siren is necessary. The siren not only can scare away the intruder, but also alert you and your neighbor, also people that around. 

3.Warranty and after sale service 
Each function will malfunction one day, to fix alarm system may not require you with the advanced technical skill, so you need to buy from a supplier with warranty and can provide after sale service. Alarm system come with warranty can reduce the cost of maintenance.

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.Most of our products support external alarm devices.Hope this article is helpful on choosing suitable alarm devices for your CCTV system.

How to calculate the bandwidth for IP Cameras?

• Author:Grace Liu
• Source:www.mvteamcctv.com
• Release on :2016-10-20

The influencing factors of bandwidth
1-Video encoding resolution.

The bit rate is bigger when resolution is higher.For example,under the same conditions, the bit rate of 1080P is higher than 720P. 

2-Video encoding algorithms.

Such as MPEG-4, H.264, H.265,under the same resolution and SNR,the bit rate:H.265<H.264<MPFG-4.

3-Video compression SNR(Signal-Noise Ratio).

Under same image quality, the lower bandwidth cost by the higher SNR. 

In the practical application,the bit rate is adjustable,but reducing the bitrate is usually at the expense of image quality or frame rate.

Device Side Bandwidth calculation 
In order to achieve the best video effects, we recommend 1CH HD monitoring occupies bandwidth not less than 3Mbps.Details as below:

The device side is mainly unload monitor videos, so you need enough upload bandwidth. 

Client Side Bandwidth calculation 

Please use the following formula to calculate and estimate whether the bandwidth is sufficient: 

If the connected device is IP camera, usually connect to the IP camera's second code stream or third stream, assuming that the code stream is 1024kbps, 1024kbps / 8 = 128KB / S, which requires 128KB / S download bandwidth.If  the connected device is NVR, also need 128KB / S multiplied by the number of channels.For example,if the bandwidth is 8M, then 8192kbps / 8≈1024kbps, that means at  8M bandwidth and the network in good condition, you can remote connect 8pcs 1024kbps bit rate IP Cameras.The client side mainly downloads the monitoring video to watch, so it needs have enough download bandwidth.

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How to do when DVR can not detect hard disk?

• Author:May Zhou
• Source:www.mvteamcctv.com
• Release on :2016-10-18

Do you have the experience on sloving DVR can not detect hard disk problem?If yes,would you like to share your solution with us?In exchange,following we share our experience at first:

1-Firstly ,we need exclude problem of hard disk.It's simple,install another hard disk  to DVR and check whether DVR can detect the new hard disk.The hard disk for DVR is 3.5” with same size as computer hard disk.MVTEAM DVR support Western Digital and Seagate brand HDD.

2-Second, exclude the problem of power adapter.If the power supply can not provide enough power for DVR,it may cause can not detect problem too.So need use another bigger power to test. 

3-If you have checked there is no problem on hard disk and adapter .Then,considering DVR firmware problem.Need take the picture of DVR version information and send to your supplier to ask for repairing software. 

4-If DVR still can not detect HDD after updating software , there may be problem with hardware .If the DVR is from MVTEAM, we can not solve hardware problem online,will need customer send the motherboard back to us for repairing. 

Hope the information above can help you.Welcome to share your experience on sloving DVR can not detect hard disk problem with us.Any questions and other needs please feel free to contact with us .

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