CCTV, Fire Alarm and Intruder Alarm Systems
Start with the system you need — CCTV, Fire Alarm, Intruder Alarm or perimeter protection — then see how the design changes for residential and commercial properties. Monitoring, maintenance, takeovers and compliance support remain available through Service & Monitoring.

Intruder alarms, perimeter protection and CCTV designed around the home
NOX works with semi-detached houses, family homes, larger detached properties, rural sites, garages, gates and outbuildings. A well-designed system is considered and installed properly, whether it protects a semi-detached home, a larger detached property or several external areas.

Ajax Intruder Alarms
Wireless or hybrid alarm design with MotionCam photo verification, DoorProtect, user controls, sirens, app access and external detection where the survey supports it.
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Perimeter Protection
Ajax external detection for driveways, side access, garages, outbuildings, yards and selected approaches, designed as a separate early-warning layer.
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Professional Residential CCTV
Fixed cameras with a dedicated recorder for stronger whole-property coverage, continuous or scheduled recording, playback and remote viewing across driveways, entrances, gardens, garages and outbuildings.
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Smart Home Security
App-led solar, battery, floodlight and doorbell cameras for homes that prioritise convenience, straightforward notifications and a lower-disruption installation.
Explore Smart Home Security →Fire, CCTV and intruder systems for commercial premises
Commercial work is led by fire-alarm installation and servicing, CCTV, intruder protection, emergency lighting and property-specific risk or compliance requirements.

Commercial Fire Alarm Systems
New Ajax EN54 and suitable traditional fire-alarm installations, followed by testing, servicing, records and coordinated compliance support.
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Commercial CCTV
Multi-camera systems for shops, offices, hospitality, yards, warehouses and industrial premises with NVR recording, playback and remote viewing.
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Commercial Intruder Alarms
Internal and external detection planned around access, staff use, opening hours, valuable areas and the agreed monitoring or keyholder process.
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Emergency Lighting & Fire Risk Support
Emergency-lighting installation and testing, plus fire-risk-assessment routes for landlords, HMOs, hospitality and operational commercial sites.
Explore Emergency Lighting & Fire Risk Support →Move into the right service plan, monitoring or compliance package
Recurring support is kept separate from the new-system design so the customer can see exactly what they are buying. Residential customers can combine alarm, monitoring and CCTV maintenance; commercial customers can add Fire servicing, emergency lighting and coordinated compliance support.
Residential and commercial installations in the field

Commercial CCTV Installation for a Chesterfield Hospitality Venue
Bottle & Thyme needed recorded security that could support a busy hospitality environment without working against the character of the venue. Customer entrances, circulation areas, staff movement and changing light levels all affected the useful camera views. NOX planned the system around those operational areas, installed the cameras and recorder, configured the live-view display and completed a straightforward handover so the team could use the finished system confidently during normal trading and after an incident.

Black CCTV and fire first-fix at The Tan Station
The Tan Station was being created as a modern customer-facing premises with a strong black interior and exterior finish. Leaving fire and security planning until the end would have risked exposed routes, awkward device positions and equipment that looked disconnected from the completed fit-out. NOX became involved during the project, completed the fire-alarm first fix and installed black internal and external CCTV in positions selected around the layout, finishes and intended use of each area.

Ten-camera Hikvision CCTV system at a former bank
The former bank is a substantial multi-room commercial property where a small number of general camera views would not have provided useful coverage. Entrances, corridors, individual rooms and the external approach all needed to be considered separately. NOX designed and installed a ten-camera Hikvision system, introduced a new recorder and dedicated display, checked the live and recorded images across the building and completed a handover suited to the day-to-day management of the Retford premises.

Ajax Alarm and CCTV Installation for a Chesterfield Home
This Chesterfield property was being renovated and needed a security system planned around both the risk and the finished look of the home. The customer wanted protection across the main house, garage and external approaches, but standard white equipment would have stood out against the darker frames and brickwork. NOX combined Ajax intruder protection with black external CCTV, a matching keypad, recording equipment and a branded warning device, then configured the system around straightforward household use.
Related services in your area
Find the most relevant NOX installation, servicing and takeover options across our core service area.
Professional advice, installation and aftercare
“Brilliant service from NOX. Super professional, knowledgeable, and they went out of their way to be helpful. Everything was explained clearly and in detail. The install was tidy, and the whole process was smooth from start to finish. We were thinking about getting a security system for a while and now we're so glad we went with NOX. Would 100% recommend to anyone.”Ryan HargreavesAjax Alarm System
“We recently had NOX install cameras, smoke screens, and alarms at our office and the whole experience has been spot on from start to finish. From the very first phone call with Isaac, everything felt straightforward and reassuring. He took the time to explain our options, answered all our questions, and helped design a system that made sense for our building and our budget. No pushy sales tactics at all, which was refreshing. The installation was smooth, the team were professional, and even after everything was fitted, Isaac has been on hand to help with any follow-up questions. A really great service and a company I'd happily recommend.”Nathan De La RosaCommercial CCTV, Alarms & Smoke Screens
“We had NOX Fire & Security install our commercial fire alarm system alongside an intruder alarm, and the whole experience was spot on from start to finish. Clean, professional installation, everything clearly explained, and the system is easy to manage through the app with instant alerts. The fire system is clear, reliable and easy for the team to manage without overcomplicating things. No pushy sales, no unnecessary contracts — just honest advice and proper workmanship. You can tell they care about doing things right. Highly recommend NOX for any business looking for fire or security systems in Chesterfield / Sheffield.”Rory StirlandCommercial Fire Alarm & Intruder Alarm
Tell us whether the property is residential or commercial
NOX will identify the right next step for a new installation, existing system, service plan or takeover.
