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FAQ

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.

What is the difference between monitoring cameras CCD1 / 3 and 1/4?

The bigger the CCD is, the better. There are now 1 inch, 2/3 inch, 1/2 inch, 1/3 inch, 1/4 inch. 3.6MM lens distance of about 8 meters 6MM lens distance of about 15 meters 8MM lens distance of about 25 meters 12MM lens distance of about 35 meters is the larger the lens, you can see farther things, but see the face very little difference is 1 / 3 lens of the light through the small aperture

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

Most of the time with seven infrared one machine, the nearest infrared machine 15 meters, farthest infrared one machine 110 meters. Cloth RVV2 * 1.5 power cord

Home monitoring system which brand is better

Home surveillance camera in the design to be compact, not because of the size of the camera and easy to attract attention, should not prevent family life.

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.

Zhongwei HD monitoring system IP address is not how to do

Click on the problem of the screen, right - remote management - network management, the IP address can be changed to other IP (such as 192.168.1.172, etc.), change the device management interface, a key to set IP, so there will be no IP conflict Causing the camera can not use the problem.

57 Road 1080P surveillance video requirements to store a month, how much hard disk space?

Need 91T or so hard drive, high-definition quite occupied hard disk, 720P basic to a small half,

I installed a monitoring camera admin user password forgotten! How do you handle

Hai Kangwei as: user name admin password 12345