Security Alarms

Fire Alarms

CCTV

Access Control

Hemel Hempstead

CCTV Surveillance &
CCTV System Installers

What is CCTV?
CCTV (closed-circuit television) is a TV system in which signals are not publicly distributed but are monitored, primarily for surveillance and security purposes.

How does CCTV work?
CCTV relies on strategic placement of cameras, and observation of the camera's input on monitors somewhere. Because the cameras communicate with monitors and/or video recorders across private Coaxial or Cat 5 cable runs, Wireless or Internet communication links, they gain the designation "closed-circuit" to indicate that access to their content is limited by design only to those able to see it.

CCTV Technology:
Older CCTV systems used small, low-resolution black and white monitors with no interactive capabilities. Modern CCTV displays can be colour, high-resolution displays and can include the ability to zoom in on an image or track something (or someone) among their features. Talk CCTV allows an overseer to speak to people within range of the camera's associated speakers.

CCTV is used for a variety of purposes, including:

Maintaining perimeter security in medium- to high-secure areas and installations.

Helping with home care for the elderly.

Observing behavior of incarcerated inmates and potentially dangerous patients in medical facilities.

Traffic monitoring.

Overseeing locations that would be hazardous to a human, for example, highly radioactive or toxic industrial environments.

Building and grounds security.

Obtaining a visual record of activities in situations where it is necessary to maintain proper security or access controls (for example, in a diamond cutting or sorting operation; in banks, casinos, or airports).

CCTV is finding increasing use in law-enforcement, for everything from traffic observation (and automated ticketing) to observation of high-crime areas or neighborhoods.

CCTV Applications:



Private Places:

• Less use of white light means less light pollution.
• Active Deterrence: Warn off intruders during the intrusion.
• App Alert: Notification if movement detected.
• Colour Monitoring: Presents colour alarm videos.
• Scenarios: Homes, Shops, Factories, Warehouses, etc.



Public Areas:

• Active Deterrence: Customized sounds and light alarm to warn the target in the area.
• Accurate Detection: Focuses on human and vehicle targets to accurately identify real targets.
• Ecosystem: One-tap disarming with alarm-in port or DMSS.
• Scenarios: Fire exits, emergency exits, etc.

We at Grange can provide the solution for your problem with simple systems for your home or more sophisicated requirements in the workplace and public areas:

We can offer Dahua's TIOC (Three in One Camera) Solution.



Smart Dual Light:

• IR Mode (Optional): Only the IR illuminator is ON. It is suitable for scenes where supplementary warm light is not required, significantly reducing light pollution.

• Warm Light Mode (Optional): Only the warm light is ON. It is suitable for scenes that require color video footages.

Voice Catcher Technology:

• Newly-designed Dual Mic Array intercepts external circuit interference.

• Audio pick-up distance is increased by 7 meters compared with the previous version of TiOC in a lab environment.

• The Dahua VoiceCatcher reduces noise and extracts audible audio signals.

Better Image:

• First Dahua camera powered by OPC (Optical Path Technology). It corrects the refraction angle of different light path. With F1.0 large aperture lens, it outputs brighter and clearer black & white images.

• 4K Real-time: Smooth 4K real-time images at 30 fps even when AI is enabled, with high brightness using F1.0 large aperture.



AI Features:

• With upgraded AI capabilities, the SMD function filters out irrelevant objects in the scene. Equipped with new deep learning algorithm, SMD 4.0 is optimized to filter out small and large animals in the scene to avoid triggering false alarms.

• The perimeter protection function based on tripwire and area intrusion sends an alarm only when unwanted movements triggered by human or vehicle targets occur, saving users from unnecessary actions caused by false alarms.

• The Dahua AI SSA (Scene Self-adaption) technology is based on deep learning algorithm that can intelligently identify multiple scenes and adjust to their optimal images.

Auto Tracking:

• Smooth Tracking Process - Combined with PFA 3.0 algorithm (a deep fusion of intelligent algorithms and focusing algorithms), it realizes touchless focusing during the tracking and capturing process.

• Long Tracking Distance - With the Automatic Tracking 2.0 algorithm as its foundation, the requirements on the tracking size of the target are further reduced, making the target size smaller and the tracking distance longer. The tracking distance of Automatic Tracking 3.0 can reach up to 870 meters.

More about our
CCTV Products

Need to know more
about TIOC Cameras?

SMART CCTV - TIOC Cameras

Hemel-Hempstead CCTV Systems | HP2 CCTV Systems | Hemel-Hempstead Access Control | HP2 Access Control
Unit 8 York Way, Cressex Business Park, High Wycombe, Buckinghamshire, HP12 3PY

A trading name of The Security Network ltd. Registered in England No: 4511308. VAT Registration No: 803 1522 77. © The Security Network ltd 2002 All rights reserved.

For your peace of mind please choose Grange Security Systems. We can install your CCTV Surveillance System that can be used to record evidence of vandalism, theft or burglary for the Police. We select the correct cameras and place them to cover all of the vulnerable areas. The cameras can be remotely monitored by you using a PC on the internet or your smart phone browser, or monitored by our monitoring station who can alert both you and the Police if there is vandalism or a break in. This is often used in conjunction with your Intruder Alarm.
To deter burglars who dont want to be seen Security Lighting is installed, but when installed they are also an aid to visitors approaching your property in the hours of darkness. The lights can be self contained with their own movement detectors, or linked so that any movement in the protected area will cause all lights to turn on. The linked Security Lighting System can also alert the occupants with an audible warning buzzer.
Personal recommendations from our clients in and around Hemel Hempstead generates much of our work. We underatke our work in close co-operation with the Hertfordshire Police Authority. As a NSI certified Gold Installer for both CCTV Surveillance Systems and Security Lighting you can have confidence that our installations and service are of the highest quality.
Grange Security Systems can repair Security Lighting and CCTV Surveillance Systems in Hemel Hempstead that have been installed by others and can offer a continuing preventative maintenance contract that will ensure that your CCTV Surveillance Systems and Security Lighting remains fully operational protecting your family, employees and property. Under the cover of our Hemel Hempstead Security Lighting and CCTV Surveillance Systems preventative maintenance contract you will receive 24 hour, 7 days a week support from our engineers, and a reduced price for any replacement parts or repair call outs that may be required to keep your system fully working.
Established in 1982 we are specialists in CCTV Surveillance Systems and Security Lighting, we undertake the maintenance, repair and new installation of CCTV Surveillance Systems and Security Lighting for your home, office, factory, warehouse, care home, school or hospital in and around Hemel Hempstead.
Our staff are all fully trained, security screened and dedicated to ensure we give you a friendly and professional service.