Harris County Universal Services is the solutions center for the departments and offices of Harris County. It designs, implements and maintains high-quality, innovative and cost-effective technology products and services for its customers. It provides comprehensive support through divisions: Business Applications, Business Operations, Customer Service, Cybersecurity, Fleet Services, Information Technology Infrastructure, Public Safety Technology.

Founded in 1982, Harrison Locks offers alarm, access control and master key systems. Harrison Locks supply and fit a range of Codelocks Paxton keypads and keyfob systems. The company's access system is Corkey, which is a global access system and Harrison Locks are one of Corkey’s main 4 UK dealers

Haven Security Ltd. designs, installs, update and maintain various security systems for commercial and domestic application. The company is a member of the National Security Inspectorate. Located in East Sussex, Haven Security Ltd. have over 25 years' experience in installing burglar alarms, remote monitoring, access control systems, and fire alarms etc.

Established in 1974, Hawk Security is a full-service security provider. Hawk Security specialises in burglary/intrusion detection, home fire and flood detection, home automation, and video monitoring. Hawk Security secures homes, families, and businesses, providing maximum peace of mind.

Based in Stanford-le-Hope, Hawkwell Alarms work throughout Essex and London, providing homeowners and commercial businesses with the very best in alarm and security system installations. The company's extensive range of alarm system services includes Wireless alarm systems, CCTV, System monitoring, access control, fire detection, and security lighting. Hawkwell Alarms have achieved accreditation from NSI NACOSS Gold Approved.

HD2020, LLC is a home automation company providing services such as security camera installation, programmable lighting control, audio/video installations where the user can control all the systems from one location, lighting, home theater, and energy management as well.

HDL is a global company that manufactures customised building automation products and professional stage lighting equipment. The products and solutions promote energy-savings, centralised control, comfort, convenience, added security to customers across the globe. HDL specialises in home automation, building automation, smart home, lighting control, smart building, intelligent system, wireless home control, security sensors, etc.

HDS-Sicherheitstechnik offers professional solutions for camera surveillance and alarm technology. The team of HDS-security technology supports nationwide quickly and flexibly in all areas of safety technology. HDS-Sicherheitstechnik also offers wireless alarm systems that provide optimal security for network objects to be protected.

Hecla is a leading company for the supply and turnkey installation of professional audio and video systems. Hecla Professional offers from the knowledge, diversity and flexibility of the sale, rental, installation and service of reliable, high quality audiovisual solutions to public and corporate market.

Heiman Technology is a hi-tech enterprise which specialises in research & development of security products including PIR detector, IR detector, smoke detector, gas leakage detector, security alarm system, magnetic switch, button, alarm siren, etc. With advanced equipments, specialised engineers and versatile service, the ODM/OEM and direct sales services are provided to the customers around the world.

Specialising in providing solutions for business groups, govt. and private sectors, they design, supply, install, integrate and provide services to the state of art turnkey electronic security and networking solutions. Providing Impeccable Services to meet the customer’s requirement is the main concern of HELIBENZ TECHNOLOGIES. The Company offers Solutions in: Network/IP CCTV System Fire Detection & Intruder Alarms System

HENSOLDT is a supplier of premium sensors for security and surveillance missions. Capitalising on more than a hundred years of experience in high-performance technology, they are the world market leader for missile warning systems and submarine periscopes. Moreover, HENSOLDT is well-represented in the market for radar systems, optronics, and electronic protection systems.

Herts CCTV Ltd is a UK based installer of CCTV, access control, alarms, automated gates, security lighting for industrial, commercial, and domestic purposes

HESA SpA, is an Italian distributor for Electronic Security and CCTV surveillance solutions. Established in 1974, HESA has been unswerving in their commitment to excellence and vanguard technology, aimed at protecting property and people from any situation of harm or hazard.

HESIS are specialists in the design, installation, commissioning, maintenance, and emergency response for all types of life safety and security systems across the United Kingdom. HESIS are market leaders across all business sectors, and have an enviable and proven record which is delivered by a professional business team who fully support all clients by providing the very best levels of service possible.

Heston Apex Ltd has specialised in the design, supply, installation and maintenance of fire detection, extinguishing systems, intruder alarms, CCTV, door entry, access control, asset tagging, audio visual systems, nurse & warden call systems and related support services. The company is NSI Gold Approved for the installation of intruder alarms for both commercial customers and consulting engineers.

Hewes Security is a privately owned company that installs security systems for the corporate, small business and domestic environments and are approved by the National Security Inspectorate. The company's security services includes products like intruder alarms, fire security, CCTV, physical security etc. Located in Essex, Hewes Security maintains their high standards to this day.

Vacant properties can be vulnerable to all kinds of unwanted attention, from mindless vandalism to illegal occupation, and might be unoccupied for any number of reasons. HG Security Ltd's unique on-site security solution will protect property and save the potential cost of remedial works by deterring any unwanted visitors. Their system is proven and effective, guarding properties all over the UK since 1992.

HSS is passionate about providing the best possible service and quality equipment. They specialise in installing all low voltage and safety equipment including: access control, security, telephone entry, fire, security cameras, DVR's, point-of-sale, telephone systems, music and sound, paging, cabling and networking.

High System Company provides integrated communication solutions for small to large enterprise customers in the competence security, CCTV & IP surveillance system, access control system, Time-Attendance solution, intrusion system, fire alarm system, public address system, metal detectors, EAS system, Audio-Visual intercom, and fire fighting system. The company also provides pre-sales training and consultancy services to organisations.

Highgrade Fire & Security is a service provider company. The company installs, maintains, services as well as upgrades existing security systems. Highgrade Fire & Security offers wide range of products including fire alarms, intruder alarms, CCTV, access control, emergency lights, networking solutions, fire extinguishers, etc. from leading manufacturers like Pelco, Axis, Hikvision, Bosch, Kentec, Honeywell, Hochiki, Texecom, & more.

Hik Technology Enterprise is an experienced distributor/reseller and professional team offering security products in the market from Samsung, Hikvision, Panasonic , Bosch, Dahua, Entrypass, MicroEngine, Mag Barrier Gate, D’nor Auto Gate, OAE Auto Gate, and Suprema, among others. The company also supplies professional security system & HD CCTV such as Network CCTV cameras.

HillQuest Security is a premier licensed and bonded security firm, dedicated to servicing clients throughout the State of California. The company is dedicated to providing unique, personalised and comprehensive security solutions to meet each and every client’s needs and budget. HillQuest's commercial security services include bank security, construction security, healthcare security, retail security, school security, and event security.

HIP Global Co. Ltd. is a reputable manufacturer and distributor of the finger scan, RFID card, CCTV, hotel lock, car parking system, security alarm under the brand name of 'HIP' (Highest Ideas Products).

HIPRA is a well-known privately owned security & manpower agency that is committed to providing excellent service to its clients. Its clientele includes top businesses, financial institutions, shopping centers, manufacturers, communities, banks, and agriculture.

HKC was established over two decades ago to serve the growing needs of the Irish security market. HKC is now a growing force in the UK and has rapidly become a trusted brand delivering intruder alarm products. The Company is renowned for its range of electronic security products, including wired, hybrid, and wireless security control panels and is also a manufacturer of communicators, keypads, internal and external sounders, detectors.

Hochiki Corporation undertakes design, manufacture, installation and maintenance of fire alarm systems and produces in excess of 3 million units per year. An international market leader in the manufacture of fire protection products Hochiki Corporation also produces fire extinguishing, security and cable television systems. The Company employs some 1,300 people, has 3 manufacturing plants, 35 sales offices and 13 subsidiaries in Japan.