Q:What is the meaning of the camera function heartbeat?

In the previous case, the implementation steps are as follows: 1, in a unified authentication system to open a "heartbeat" thread, the timing of the implementation of a visit A system operation, access to the A system S interface; 2, A system to achieve an interface S, Function for each access to an access request, then record a record of access, for example: 2009-3-18 fw 3, System A also need to also open a "heartbeat" thread, not separated by a certain time, access to the interface S is done Visit the record to see if the last record of the old record logo, if not, then prove that the single point of the system has the latest "heartbeat" came, its function is no fault.

Q:Wireless surveillance camera security is not? Easy to be peeped not? LAN and external network access speed how?

That visit is the time of video transmission, of course, will be faster in the local area network if you want to visit soon need to have a high bandwidth of LAN connection.

Q:Will a 12V10A switching power supply with a few 12V2A surveillance camera? How far can its DC current output? Please have experienced master answer, thank you

12V10A switching power supply with 5 12V2A surveillance camera.

Q:Monitor inside the infrared network camera infrared light automatically switch and synchronous switch What does this mean?

Synchronous switching --- image color mode switching action by the fill light control, light image black and white, light off image color. The

Q:Does the infrared surveillance camera automatically alarm when someone enters the monitoring range?

General camera is not the end of the low-end camera does not have this function, you can use the alarm to linkage, the alarm through the infrared detection of some people come in, will alarm. There is an automatic monitoring area of the camera can be, once someone appears in a certain area will be the alarm, similar to the road to shoot the kind of red light. Very sensitive, but the cost is relatively high. The best infrared camera can find 300 meters of people, but it is expensive.

Q:Is there a surveillance camera that can be plugged in

Monitor camcorder Baidu search

Q:There are cameras at the fork in the expressway

The third is to monitor the camera, this camera has a spherical, cylindrical, square box and so on. Some of these cameras with LED lighting device, at night to keep the light to ensure that the camera vision clear. Set the purpose of these cameras is mainly to capture the various types of information applied to the security prevention and control, according to the image records that the facts of the case, locked so that arrested all kinds of criminal suspects

Q:3 megapixel surveillance cameras store much day

Monitor video 24 hours per channel per day Recording space size calculation formula:

Q:How to choose to monitor the camera and video capture card?

Second, the installation of monitoring equipment needs to be sure to install several cameras and determine the monitoring range and image quality of each camera. First determine the number of cameras to monitor, and then according to the specific circumstances to determine the camera lens monitoring range: the camera must be clear to the monitoring point of the distance and the need to monitor the area, as the clarity, Ai Wei technology that: analog monitoring system 700 lines Cameras, and network digital monitoring system, millions of high-definition camera prices are very cheap, can be selected according to actual needs.

Q:Network surveillance camera, at home, the mobile client can be used, but after the connection network, the client shows the ID is invalid, what is the situation?

You use the wifi at home and your network camera is in the same network, and in the outside belongs to a different external network, before the landing mode is the way the network landing, so do not see outside.