Profile: Stahl Tecniks Private Limited supplies, installs and commissions the entire unit on a turnkey basis. We are a ISO 9001:2000 certified company. We pick up projects from the green field stage, design and plan the complete infrastructure. We have completed projects in hardened blast proof structures, installation of security systems, clean rooms, NBC detection, sewage treatment plants and warehousing structures as turnkey solutions. 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 multi-point, or mesh wireless links. Security Surveillance are mostly used in monitoring of banks, casinos, airports, military installations, and convenience stores. Access control is a system that enables an authority to control access to areas and resources in a given physical facility or computer-based information system. An access control system, within the field of physical security, is generally seen as the second layer in the security of a physical structure. Access control models are sometimes categorized as either discretionary or non-discretionary.