National Sheriffs'​ Association headquarters is located in Alexandria, Virginia and offers training, information, court security services, jail information and other law enforcement services to sheriffs, deputies, and others throughout the nation. NSA has worked to forge cooperative relationships with local, state, and federal criminal justice professionals across the nation to network and share information about homeland security programs.

NSI provides a consultative service to its clientele that encompasses the entire organisation's security architecture. This begins with a Security Risk Audit covering everything from the Premises, Staff, Policies, Procedures, Due Diligence, Geopolitical Risk, Cyber Security, and Technical Surveillance Counter Measures as well as many other contingencies.

National Technology Management provides expertise to startup companies designing their first voice and data networks. Based in Southfield, USA, the company also provides security system services like access control system, CCTV cameras etc. for banking/finance, education, energy/oil & gas, gaming, government, healthcare markets.

As the European pioneer in naval defence, Naval Group uses its extraordinary know-how, unique industrial resources and capacity to arrange innovative strategic partnerships to meet its customers’ requirements. As a system-integrator and prime contractor, the group designs, builds and supports, deconstructs and dismantles submarines and surface ships. It also supplies services to shipyards and naval bases.

Navana Interlinks provides design, supply, installation, testing and commissioning of fire detection & protection system, CCTV system, access control system, intruder alarm system, PA system, X - ray baggage scanner, cargo vehicle inspection system, explosive detector, walk through metal detector, hand held metal detector and other security related products and solutions.

One of the largest privately held national electronic security system integrator in the USA, NAVCO keeps one step ahead of ever-changing technology. They combine unmatched expertise with unrivaled service to offer complete business security solutions that meet specific challenges today, while protecting business interests and investments.

NBM Distribution Limited - a global supplier of data network cabling architecture solutions and security products - specialise in supply chain management services, and distribution of leading global brands to the UK and EMEA regions. NBM helps to specify solutions and support informed purchasing decisions around the continual change in technology, applications and industry standards, to reduce the cost of implementation.

NC& (former Nextchip) specialises in the design of semiconductor of image processing and mixed signal ASIC for surveillance application such as CCTV and Car-driving recorder for aftermarket etc. in Korea. AHD™, the new video format technology in transmission as unique cable driving technology powered by Nextchip supporting up to UHD level and related new ISP(TX) and Video Decoder(RX) keeps leading the world market.

NC4 and its wholly owned subsidiary The ESP Group, deliver safety and security solutions that revolutionise how government and businesses collect, manage, share and disseminate information to fight crime, mitigate risks, manage incidents, and securely communicate and collaborate with one another. Headquartered in El Segundo, California, with locations across the country, NC4 provides 24x7 proactive incident information and analysis.

NControl offers a group of scalable, hardware-independent Asset Tracking Systems called NEAT. Their NEAT systems add intelligence to asset tracking with their ability to determine asset direction, use two-man rules, control doors, generate workstation alarms or activate cameras. NEAT can track personnel and assets; even use different hardware in the same installation. NControl can design and install the perfect tracking solution for your needs.

NCS Technology is a Kent based company that provides robust, reliable data networks, cabling and communication solutions, as well as Audio Visual systems and electrical installations for industry, commerce and public sector organisations throughout the South of England. NCS supplies and installs Mobotix, Avigilon and Samsung IP surveillance camera systems.

NDI Recognition Systems offers a range of automatic number plate recognition systems, software and cameras, including fixed-site ANPR solutions as well as an innovative portfolio of mobile and covert ANPR offerings.

NDI Recognition Systems, a member of The Dacoll Group of companies, is a leading supplier and manufacturer of ANPR/ALPR technology and solutions to the Law Enforcement and Commercial sectors. The company offers a range of automatic license/number plate recognition systems, software and cameras, including fixed-site ANPR/ALPR solutions as well as an innovative portfolio of mobile and portable offerings.

NEC Networks & System Integration Corporation provides a range of solutions backed by system integration and related support services as well as sophisticated engineering/facility management capabilities. In the security field, they provide fully optimised solutions on a range of topics such as management, networks, servers, and physical security. They also provide cloud computing, network and communication solutions.

Nedap designs solutions to fit customers’ needs rather than offering predefined systems. The company's develop the first software-based security management platform–AEOS, that combines access control, video management and intrusion detection on one platform. Based in Netherlands, Nedap strives to offer the best service during implementation and after.

Neelachal Support Services Private Limited has been established in India since March 1984 providing service to various Govt., Semi-Govt., private and public sector undertakings throughout India.

With over 40 years of heritage in electronic manufacturing services, NEOTech focuses on low-medium volume/high-mix, high-complexity products primarily in the defence/aerospace, industrial and medical device design, and manufacturing field. Their business is all about converting innovative product technology into state-of-the-art engineered products.

Neovista Technology Co., Ltd. has more than 6 years experience in CCTV products researching and developing, manufacturing and marketing. To provide stable and high-performance surveillance systems, Neovista's products are certified by CE , FCC , RoHS and have undergone strict quality inspection before leaving the plant so as to meet international standards and customers' requirements.

Ness Corporation offers all facets of today’s Security Industry and Home Lifestyle Technologies including Ness Designed Alarm Panels, Motion Detectors, Wireless Products, Access Control, Home Automation, CCTV, Medical Alarms, Intercom Systems and Lighting Control Interfaces. The company develops, installs and distributes security systems. Ness have branches in Sydney, Brisbane, Melbourne, Adelaide and Perth.

Nessence provides Business Intelligence solutions, bringing quantitative analytics for total insight within an organisation, a foundation for resource planning, budgeting, and accelerating marketing and sales.

Nest is the manufacturer of home automation and security solutions. They manufacture thermostat, smoke+CO alarm, indoor cameras and outdoor cameras. The customer can keep tabs on their home via their app.

Nestor Company is a supplier of high-quality and high-tech products for access automation, intercom, parking systems, CCTV, electronic security, burglar alarm, automatic access and fire detection. For 40 years, professional installers, project and study agencies have received excellent service from Nestor Company.

NESTTECH INDIA PVT. LTD. offers finest security source from around the world with its best finishing and binding technology, distinguished design with outstanding quality, customer support and relentless innovation. The company has in-house Research and Development department in which they design and develop products using RFID, SMART CARD, MAGNETIC SWIPE CARD IR, GSM, RF & Ethernet technologies.

Net GmbH develops camera technology for the medical and industrial sectors. Based in Germany, the company product portfolio includes CCTV camera lenses, software, illumination tetc. Net GmbH deliver solutions that make a difference to its customers´ applications by delivering competence in vision technology.