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Business Details
21 Years
experience
Smart Security Systems Installation in Christchurch
Established in 2005, SDL Security Limited is a family-run business specialising in advanced smart security solutions. Our expertise spans Qolsys burglar alarms, Alarm.com WiFi cameras, Visonic systems, and traditional security installations, all integrated via the Alarm.com app for seamless control. With over 18 years of industry experience, including projects for Imperial College London and Coca Cola HQ, we prioritise military-grade encryption and wireless technology to deliver reliable, future-proof systems.

Based in Christchurch, we serve Dorset, Hampshire, and surrounding areas, offering NSI-approved standards and CAMEsafe-certified gate automation. Our team combines technical proficiency with personalised service, ensuring tailored security strategies for residential and commercial clients.
Services
Smart Burglar Alarms WiFi CCTV Systems Access Control Gate Automation Wellness Monitoring Intercom Systems Traditional CCTV Alarm Maintenance Home Automation Security Surveys
Details
  • Year established: 2005
Highlights and features
  • We offer NSI-approved standards for intruder alarms and CCTV installations.
  • Our team has 13 years' experience managing security systems at Imperial College London.
  • We integrate multiple smart security devices into single-app control via Alarm.com.
  • We specialise in PSTN-independent WiFi systems compliant with 2025 UK infrastructure changes.
  • Our engineers hold CAMEsafe certification for gate automation installations.
Associations and certifications
  • NSI Gold Approval
  • CAMEsafe
What people say
Highest professional standard Excellent initial service Quick and clean installation Reasonable cost Reliable maintenance
Services
Qolsys Burglar Alarms
Our Qolsys IQ4 systems use PowerG technology with 128-bit encryption and 8-year battery sensors. These smart alarms integrate with cameras and home automation via the Alarm.com app. Designed for homes and businesses, they offer dual-path communication via WiFi and SIM card to ensure reliability post-2025 PSTN switch-off.
ADC WiFi Cameras
Alarm.com WiFi cameras provide 24/7 recording with motion-triggered alerts and onboard video storage. Featuring perimeter guard analytics, they minimise false alarms while enabling remote viewing and two-way audio. Ideal for properties requiring PSTN-independent surveillance with smartphone control.
Gate Automation
We install NICE and CAME gate systems with underground or surface-mounted motors for swing gates, and ground-fixed solutions for sliding gates. These durable automation systems enhance security and convenience, compatible with access control integration for residential and commercial properties.
Access Control
Our Paxton-based access control systems manage entry via proximity fobs and PIN keypads. Designed for commercial buildings, they reduce key replacement costs and allow time-based door scheduling. Systems support individual or grouped access permissions for enhanced security management.
Wellness Solutions
These smart wellness systems combine fall detection pendants, motion sensors, and predictive analytics to monitor vulnerable individuals. Notifications alert caregivers to unusual activity patterns, providing proactive support while maintaining user privacy through encrypted data transmission.
People
Graham Inniss
Managing Director
With 13 years at BT and security coordination experience at Imperial College London, Graham founded SDL Security in 2005. His expertise spans NSI-approved systems, CAMEsafe automation, and integration of smart security technologies across commercial and residential sectors.
Questions
What smart security systems do you install?
We install Qolsys IQ4 alarms, Alarm.com WiFi cameras, Visonic PowerG systems, and integrated access control solutions using military-grade encryption and wireless technology.
Do your systems work after the 2025 PSTN switch-off?
Yes, all our systems use WiFi with dual-path communication, ensuring functionality post-PSTN switch-off for alarms, CCTV, and doorbells.
Which areas do you cover?
We serve Christchurch, Bournemouth, Poole, The New Forest, Southampton, Ringwood, and surrounding Dorset and Hampshire areas.
Can you maintain existing security systems?
Yes, we service traditional systems including Visonic, Texecom, and wired CCTV installations alongside smart system upgrades.
Are your engineers certified?
Our team holds NSI Gold Approval for intruder alarms and CAMEsafe certification for gate automation installations.
What's included in your alarm packages?
Visonic packages start at £555, including panel, sensors, installation, and training. Optional sounders available from £599.
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