Dante provides project management services as well as commercial fire and security systems throughout the UK. The company has mechanical and construction divisions. Dante has achieved the quality standard ISO9001 and environmental standard ISO 14001. The company's specialisms include CCTV, door entry, intruder alarms, fire safety, and PA/VA.

DAS Technology can design, install and maintain security systems for a wide range of uses from homes, shops and offices to shopping centres, schools and car parks. They provide bespoke security solution that meets your needs, and all completely hassle free. Their nationwide network of engineers is trained to the highest standard in order to install security systems with a professional, efficient and reliable service.

DAS Technology are technology specialists with over a decades experience delivering solutions for both commercial and domestic customers. Their security division is full of specialists in CCTV, access control, door entry and fire.

Data From Sky are redefining the meaning of SMART by converting any video stream into the FLOW of actionable insights. Their visual traffic framework makes users a designer of the sensor they need. Born for integration, powered by AI, and running everywhere. Follow the FLOW – their masterpiece in traffic intelligence.

Data Point Information Technologies LLC is a UAE-based IT Infrastructure and ELV solutions provider specializing in CCTV Surveillance, Access Control, Time Attendance, Turnstile Systems, Structured Cabling, Networking, IP PABX, Enterprise Wi-Fi, Server & Storage Solutions, and IT & ELV AMC services. They deliver reliable, secure, and scalable technology solutions with professional installation, integration, and technical support.

Datapoint Microsystems Ltd is a leading supplier of ICT and Security systems training courses. The company provides professional certificate courses to installers, operators, managers and designers of Closed Circuit Television (CCTV), Network IP, Intruder alarm, Access control, Fire and Burglary alarm systems and all other types of electronic security systems.

Datacomm Express is a leading provider of end to end security technology equipment in Nigeria. The company consults, supplies and installs video surveillance equipments, fire safety and protection equipment, home automation and alarm systems, access control solution including biometric, password control devices.

Datec are solution providers with a strong local market understanding and service presence. Datec has successfully aligned ICT solutions and Business Services implementations across all business verticls in PNG with the rest of the world ranging from network consultancy and remote server management to application development and training.

David-Link targets the wholesale and OEM/ODM market supported by quality products with competitive prices direct from the manufacturer. Along with the advantages in prices and quality, David-Link also offers customisation of products and software that best meets individual business’ needs.

Davis Mergers & Acquisitions Group, aka, The "Graybeards," is the leading Mergers & Acquisitions firm in the Alarm and Integration industry. They've guided hundreds of alarm company owners to successful sales to the right buyers for over 30 years. Founder and owner, Ron Davis, is a well-known and popular speaker, educator and author throughout the industry.

DCI was started by a group of young entrepreneurs with an objective of providing electronic security systems / products at best price and support. At present, they are engaged in the field of security surveillance systems, security control systems, access and attendance recording systems, fire safety alarm systems, CCTV and home appliances & healthcare products.

DC Solutions is a CCTV installer based in Luton.

de Jong SICHERHEIT & IT GmbH is an innovative system house for security, information and network technology and develops, among other things, intelligent solutions for hygienic access to buildings and rooms.

Definitive Electrical supplies, installs and services many types of security system; from small residential to large commercial and warehousing systems. Ness & Hills have systems to suit any installation and budget. All alarm systems have easy-to-use touch screen keypads, battery backed up operation and back to base monitoring abilities. Other options include radio detectors, door sensors and glass break sensors.

Delaney Hardware is a renowned provider of premium builder hardware for residential homes, multi-family buildings, and commercial projects. As part of the Sargent and Greenleaf (S&G) family of brands, Delaney offers a full portfolio of hardware including door hardware, digital locks, barn door hardware, bath accessories, commercial hardware, trim hardware, steel doors and frames.

Delaney Secure Ltd is an IT security distributor specialising in biometric authentication, door entry systems and PCI DSS compliance. Leading stockist of door entry solutions, time and attendance, fingerprint readers, palm vein readers, iris scanners, face recognition and OEM biometric hardware and software solutions.

With a team of specialist communication and security engineers working throughout the Country, Deldata Computers can provide your business with a surveillance maintenance service plan that best suits your business needs and requirements.

With more than 100,000 professionals, Deloitte provides audit and assurance, tax, consulting, and risk and financial advisory services to a broad cross-section of the largest corporations and governmental agencies.

Delta Tec Alarms delivers high-quality alarm systems and reliable alarms to customers. The company advises customers on the products that best serve their security needs.

Denning Electronics has solved big communications, protection, and surveillance problems by providing sales and technical support to distributors, security system integrators, engineering design firms, architects, and system users. Their specialties include outdoor intrusion detection, video and audio surveillance, video/audio/data networks and transmission, access control, and ballistic/blast/chemical/acoustic barriers.

The Department of Homeland Security has a vital mission: to secure the nation from the many threats we face. This requires the hard work of more than 260,000 employees in jobs that range from aviation and border security to emergency response, from cybersecurity analyst to chemical facility inspector. Its duties are wide-ranging, and our goal is clear - keeping America safe.

Derik Group of companies, based at Nagercoil, Tamil Nadu, India, was set up with the objective of providing its customers quality service as per their needs. Derik has enjoyed an impressive record of consistent growth and superior performance. They owe their success to an uncompromising commitment to their futuristic and professional attitude.

DES Systems & Solutions PLC is one of the leading network services company in Ethiopia, providing professional services as well as advanced network and application solutions to customers throughout the country. In addition to offering a comprehensive security assessment, DES Systems & Solutions security specialists can help ensure that security solution is properly designed and implemented.

Designed Security, Inc. (DSI), a Detex Company, has been making quality security products in the U.S.A. for more than 30 years. The company offers a full range of access management products to fit building aesthetics while meeting today’s most demanding security requirements. DSI has developed custom and standard state-of-the-art security and access control solutions for corporate, commercial, government and industrial markets.