- Regulated output protects your electronic devices from over voltage damages, and increase life of electronic circuits and products you are using with
- Perfect for any electronic products
- Use it with for security cameras, DVR's etc
- Input: AC 100-240V 50/60Hz
- Output Voltage: 9 ~ 48V
- Output Current: 0 ~ 10A
- Output Power: 0 ~ 120W
- Size: 200 x 97 x 39mm / 7.87 x 3.81 x 1.53in(L x W x H)
- CCTV camera power supply switch box
- Closed-circuit television (CCTV) is the use of video cameras to transmit a signal to a specific place, on a limited set of monitors.
- It differs from broadcast television in that the signal is not openly transmitted, though it may employ point to point (P2P), point to multipoint, or mesh wireless links. Though almost all video cameras fit this definition, the term is most often applied to those used for surveillance in areas that may need monitoring such as banks, casinos, airports, military installations, and convenience stores. It is also an important tool for distance education.
- In industrial plants, CCTV equipment may be used to observe parts of a process from a central control room, for example when the environment is not suitable for humans. CCTV systems may operate continuously or only as required to monitor a particular event. A more advanced form of CCTV, utilizing Digital Video Recorders (DVRs), provides recording for possibly many years, with a variety of quality and performance options and extra features (such as motion-detection and email alerts). More recently, decentralized IP-based CCTV cameras, some equipped with megapixel sensors, support recording directly to network-attached storage devices, or internal flash for completely stand-alone operation.
- Surveillance of the public using CCTV is particularly common in the UK, where there are reportedly more cameras per person than in any other country in the world. There and elsewhere, its increasing use has triggered a debate about security versus privacy.
Networking CCTV Cameras:
- The city of Chicago operates a networked video surveillance system which combines CCTV video feeds of government agencies with these of the private sector, installed in city buses, businesses, public schools, subway stations, housing projects etc. Even home owners are able to contribute footage. It is estimated to incorporate the video feeds of a total of 15,000 cameras.
- The system is used by Chicago's Office of Emergency Management in case of an emergency call: it detects the caller's location and instantly displays the real-time video feed of the nearest security camera to the operator, not requiring any user intervention. While the system is far too vast to allow complete real-time monitoring, it stores the video data for later usage in order to provide possible evidence in criminal cases.
- London also has a network of CCTV systems that allows multiple authorities to view and control CCTV cameras in real time. The system allows authorities including the Metropolitan Police Service, Transport for London and a number of London boroughs to share CCTV images between them. It uses a network protocol called Television Network Protocol to allow access to many more cameras than each individual system owner could afford to run and maintain.
- The Glynn County Police Department uses a wireless mesh networked system of portable battery-powered tripods for live megapixel video surveillance and central monitoring of tactical police situations. The systems can be used either on a stand-alone basis with secure communications to nearby police laptops, or within a larger mesh system with multiple tripods feeding video back to the command vehicle via wireless, and to police headquarters via 3G.
- Unless physically protected, CCTV cameras have been found to be vulnerable against a variety of (mostly illegal) tactics:
- Some people will deliberately destroy cameras. Some outdoor cameras, such as those employed by the Chicago Police Department, have bullet-resistant housing.
- Spraying substances over the lens can make the image too blurry to be read.
- Lasers can blind or damage them. However, since most lasers are monochromatic, colour filters can reduce the effect of laser pointers. However filters will also impair image quality and overall light sensitivity of cameras (see laser safety article for details on issues with filters). Also, complete protection from infrared, red, green, blue and UV lasers would require use of completely black filters, rendering the camera useless.
- For wireless networks, broadcasting a signal at the same frequency of the CCTV network is reportedly able to jam it
How to Install a Power Supply Box for Security Cameras:
- Mount the power supply box on the wall using your drill and the supplied mounting screws. It should be close to an outlet and your security camera cables. If you can, mount the box over a stud and drive the screws into the stud. The mounting screws that came with your box may not be long enough to penetrate the drywall and the stud adequately. If this is the case, use two-inch drywall screws, which can be purchased at any local hardware store or large department store
- Remove the punch-out from the power supply box that will provide the best place to insert the power wires from your cameras
- Split the power wires from the Siamese cable (if applicable) and strip the power wires about 1/2 inch and twist the copper strands together
- Insert the camera power wires through the punch-out and connect them to the power terminals. The power terminals will be marked positive (+) and negative (-) or common. Make sure you connect the red wire or the wire marked positive to the positive side of the power terminal. The positive wire is usually red, marked with a stripe, or marked with a plus sign
- Close the box, securing it with the provided screws or lock. Insert the power cord in the box (this cord works just like a computer power cord) and plug the power cord in. Your power supply box may have come with the power cord built into the box. If so, simply plug the power cord into a wall outlet
- 1 x CCTV Camera Power Supply Switch Box