Protecting you.

Hawthorne Drive, Bangor, BT20 3LN Directions

Tel 028 9189 7662
   Open 24 Hours

Why Choose Us?

Many Years Experience
Latest Technology
Quality Workmanship

Business overview

Alarm or CCTV Systems fully fitted to your home & mobile from £300. Services or breakdowns repairs £70.

Thousands of installations to date. We have done work on Barnsley, Bradford, Leeds, Hull, Grimsby Council's & Pinewood Studio's to name a few.

We supply province wide 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 Landline and Mobile Phone Network Dailers.

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, Car Dealships and Domestic Premises. SDN CCTV 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.

Our burglar alarms, CCTV and Door Access Systems are designed to specific detail for your needs and budget. Our reliable aftersales maintenance services ensures that your security equipment remains reliable and up to date providing a 24-hour repair back up.


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Alarm or CCTV Systems fully fitted to your mobile form £300. Services or breakdowns repairs £70.

Products & Services

Alarm Monitoring

4K CCTV installation

Access Consultants and Products

Access Control

Alarm Installation

Alarm Maintenance

Alarm Repairs

Alarm Systems

Burglar Alarms and Security Systems



CCTV Monitoring

CCTV Repairs

Emergency Lighting

Entry Systems

Estate Security

Home Security

Industrial Security

Intercom Systems

Office Security

Security Alarm repairs

Security Companies

Security Lighting


Video Door Entery Systems

Wireless Alarms

Wireless Cameras

Wireless CCTV


Highly recommended

Highly recommend, very professional and good communication, very pleased over all.
20 May 2020
Thanks Steven
20 May 2020
Thanks Steven
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Fantastic job

SDN did a fantastic job at our work units so much I invited them back to do cctv work at our personal property.
18 May 2020
Thank Rob
18 May 2020
Thank Rob
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Reliable, professional CCTV service

Over the past few years, Colin at SDN CCTV has fitted two CCTV systems and several security lights for us. He is prompt, professional, and courteous, and we have been very happy with the system and his service.
18 May 2020
Thank you Dave
18 May 2020
Thank you Dave
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Great company

Great service. Reliable company. Always on call, nothing is ever too much. Happy customer. Recommended to anyone with domestic or commercial security needs. Thanks Colin 👍🏻
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Thanks Colin!

I have used SDN to fit various security systems in my homes over the years and would always highly recommend them to family and friendly. Excellent service, top of the range systems and very good value for money. Honest, reliable and hardworking team.
16 May 2020
Thanks Lorna
16 May 2020
Thanks Lorna
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