Q:Outdoor surveillance camera what brand good ah

Sony, Hikvision, Dahua, heaven and earth Albert, Rongtian as, Ya, as Xin, and so on. Each brand has high-end and low-end products, different applications, the corresponding products are also different.

Q:Home pinhole wireless surveillance camera where to sell? How much is the miniature camera?

And object-oriented design is from another way to solve the problem. The whole backgammon can be divided into 1, black and white sides, the two sides of the behavior is exactly the same, 2, board system, responsible for drawing the screen, 3, the rules of the system, responsible for judging such as foul, winning or losing. The first type of object (the player object) is responsible for accepting the user's input and informing the change of the chessboard layout of the second type of object (checkerboard object). The chessboard object receives the i's change in the piece to be responsible for showing the change on the screen, The third type of object (rule system) to determine the chess game.

Q:Seeking a few surveillance camera manufacturers

Joint venture brand can also be considered, first-line products or import or joint venture.

Q:What does the privacy of the surveillance camera cover?

3, integrated camera: built-in lens, you can automatically focus on the lens control is convenient, easy to install and debug;

Q:Outdoor surveillance camera that kind of good, how the price

1/4 inch Exview HAD CCD (progressive scan), 550TV line, 28 times optical × 12 times digital zoom, 44 million (PAL) effective pixels, viewing angle 2.1 ° -55.8 °; high sensitivity shooting, the minimum illumination 0.65 lux, high zoom speed and F1.35 brightness, can automatically switch wide dynamic, with 3D noise reduction and anti-shake function, electronic flip and mirror function ?? Alarm detection area adjustable ?? Adjust the automatic exposure response speed, Support external synchronization, up to 24 privacy area masking function, newly developed image signal processor.

Q:An accurate calculation formula for monitoring the focal length and actual distance of the lens

While the use of long focal length lens can see the car's license number (the car occupies most of the area on the screen), but can not monitor the entire car park

Q:Wireless remote monitoring camera farthest to monitor how far

Wireless camera, generally refers to the access network part is wifi, not wired, so his distance is determined by the distance of the wireless router, spade router power how much it can extend the distance even greater, as the camera can see how much Range, decided by the camera lens, usually 10-20 meters.

Q:Monitor video recorder, how do two video recorders show a display? Video recorder can not be connected with the exchange of two video recorders

(If there is a public network IP, the network camera is connected to the switch, a monitor. The camera is connected to the video splitter's inbound interface: a webcam, and then four of the four outgoing interfaces are connected to two monitors and one video recorder.) If With a webcam (no public IP), industrial usage, when the video quality is poor. ) 3, usage, the video distributor should also BNC interface: 1, video recorder, you can store; 2 with a video recorder on the line, the network hard disk video recorder connected to the display, network DVR then a 2 VGA (HDMI) distributor

Q:Monitor the type and purpose of the equipment

2. Color gun camera, generally used for indoor, if you add an outdoor shield, you can also be used for outdoor.

Q:Monitor knowledge! 1.2 m × 20 meters of the corridor with a large angle of the camera the best?

According to my experience, the first with 6mm lens, the second with 3.6 or 4mm lens is better.