​Our Security Services team are available  24 Hours 7 days a week, 365 days a year to attend to your Security needs, promptly and competently.

Our Services

We supply and install intruder alarm systems CCTV and door access control systems as well as 24 hour service and repairs.  We also have a range of privately monitored alarm options land line and mobile telephone network diallers.

We have built up a large client base in the UK with our security systems installed in shops, public houses, social clubs, factory units, schools and domestic premises. SDN CCTV and Security Systems have the flexibility to cope with the demands of your security requirements. Our products can be integrated with other electronic devices.  All our security systems come with 12 months warranty and Business finance if needed.

Our burglar alarms, CCTV and door access systems are designed to specific detail for your needs and budget. Our reliable after sales maintenance services ensures that your security equipment remains reliable and up to date providing a 24-hour repair back up.


Call us now to carry out a free no obligation survey of your premises at your convenience, and we will recommend suitable alarm system CCTV or door entry system to suit your needs.





Upgrade from analog CCTV to Digital Now.

​Our team are available 24 Hours 7 days a week,

365 days a year to attend to you promptly.


Scott, David & Nathanael.

Still going strong since1989



Call us now on:-

Lisburn : 028 9252 8144

Bangor : 028 9189 7662

 Belfast : 028 9099 4454

Mobile :   0747 026 9941

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Shop floor
Shop floor

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Day image
Day image

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Night Image
Night Image

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Fix of alarm system

We had an alarm go off on an unused burglar alarm system due to a dead battery. Colin came out, put on a new control panel, re-wired and re-configured the system and zones and spent some time with us going through the instructions.
Excellent and professional service and at a great price considering that it was a time-consuming job.

"Great cameras

I love my new cameras. I feel more relax being away from home knowing I can view my property through my phone! The cameras have a great picture day and night, and the prices are so reasonable! Overall I am so pleased with the serivces I received, highly recommended!


I will know be able to go on holiday and relax as i know i will be able to view my house from a mobile phone or a tablet. I was given one to one information from the installer on the workings of the cctv software which was really helpful. The quality of the picture day and night is very clear. Overall a great friendly and professional service. Highly recommend

Pofessional Service

SDN have provided me with an excellent and professional service, leaving me with added security and piece of mind. I dealt with Colin who was incredibly knowledgeable and went out of his way to ensure that my system was tailor made to suit my needs. I am more than impressed with not only the quality of the service but also the quality of the system! The CCTV camera images are incredibly clear and I can even remotely view them via my phone or computer which is just what I wanted. I'm not the most technically minded person in the world but even I found it all a breeze once Colin had finished explaining how everything worked, I regularly find myself checking in on my property when I'm away from home which is great for piece of mind. It was a very tidy and professional installation and I would definitely recommend SDN to homeo