SIGMA SYSTEMS specializes in design, installation, testing & commissioning of professional CCTV surveillance system for industrial, commercial & residential requirements. Established in 2003, SIGMA SYSTEMS is now a recognized full solution provider in the surveillance industry. We are committed to provide our customers with CCTV solutions that are effective, reliable, comprehensive in functions & easy to maintain. Throughout the years, we have gathered valuable skill & experience in providing CCTV surveillance solution for various requirements & conditions.
At SIGMA SYSTEMS, we strive to provide all our customers with a hassle free experience of sourcing & installing a CCTV system. This is why we put together all available resources and customers will only need to have one point of contact when it comes to any enquires or after-sales services. To ensure quality and consistent workmanship, all our projects are handled by our in-house installation team who possess much experience and technical know-how. We keep a high stock quantity for common products so that we can response promptly to customer's requirements. At SIGMA SYSTEMS, you can be sure that we are always finding better ways and methods to streamline our operations and to serve you better!.
Statistics shows that there is a major reduction in the amount of undesired activities where CCTV cameras are installed and this is why CCTV is seen by many as the best system for deterrent and detection. For corporate users, CCTV system helps to protect valuable goods and properties against thief, abuse & damage. CCTV recordings can be use as important evidences or proof when required. When connected to the internet, user can also perform a remote login to view their premises using a PC/laptop or even a mobile phone. For residential use, home owners can rely on CCTV to check and ensure that their loved ones are safe and sound at home.
Sigma systems have been providing reliable and affordable IT support through its team of friendly and dedicated technicians. We provide hardware and software repairs, office set-ups, cabling, remote support, AMC, networking and online services. We use current technologies to make sure “we fix computers” not just effectively but fast!
• A typical CCTV System consists of the following components: Digital Video Recorder (DVR), Cameras, Microphones (optional), Sensors (optional) & Relay Outputs (optional).
• The Digital Video Recorder commonly known as DVR is the brain of the entire CCTV system, all input/output devices such as cameras, sensors, etc. are connected to the DVR. The DVR is programmed to record video and audio signals from the devices, recordings can be scheduled, activated on motion detect or even turned on 24 hrs. The DVR also process inputs from sensors such as smoke detector and turn on warnings as programmed in the CCTV system software.
• A major function of the CCTV system is the ability to remote access the monitored site. This is achieved through a remote login via the internet to the CCTV system, no special software is required on the remote side, users can login just by using the Internet Explorer. For remote access to work, the CCTV system must be permanently linked to the internet by a broadband connection such as ADSL or Cable line. The CCTV system can work behind corporate router and firewall and it is not necessary to have a static IP broadband connection.
• The CCTV DVR is the brain of the system, all signal cables will be connected to the DVR. Locate your DVR at a place where the cables can be neatly covered or concealed, ensure that at least one power socket is available at the area. For Network CCTV DVR, the unit must also be connected to your internet Modem/Router, a network cable is used to connect the CCTV DVR to your Modem/Router.
• Some CCTV DVR (especially PC-based system) requires a display screen to perform configuration and maintenance work, make sure that enough space is allocation for the display screen when planning the CCTV system. The display screen can also be located away from the CCTV DVR (for eg. in another room) if it is mainly used for monitoring purpose. In such cases, the addition cabling for the display screen must be taken into consideration.
• It is important that adequate ventilation is provide for the CCTV DVR, insufficient cooling of the DVR will result in premature failure of the DVR internal component especially the Hard Disk. Never place the CCTV DVR in an enclosed cabinet. If possible, locate the CCTV DVR in air-conditioned environment such as a server room. Do not place object on top or in any way that will block the DVR's ventilation holes or louvers.
• When choosing your CCTV camera, consider the following factors: angle of view, night viewing capability, indoor or outdoor use, location of camera.
• The location of the camera is an important factor that affects the effectiveness of the CCTV system. Cameras located at high position give a better overall view but might be ineffective in capturing human faces. Cameras positioned too low are prone to vandalism. Wide-angle cameras give a good overview but compromise on image details, narrow-angle cameras give good image details and are suitable for long corridors. For outdoor, weatherproof cameras are required, surge protection devices might be required if the area is prone to voltage surge or lightning’s. IR cameras are more effective for short distant & enclosed area (typically less than 20-30m), IR cameras are not very effective for viewing vast outdoor area at night. If surveillance of outdoor area at night is important, use good quality Day & Night camera which has low lux rating and install additional lightings at area of importance. Finally, never position a camera to view directly onto a light source.