Ajax intruder alarm installation
Intruder alarms that put you in control of your space
Rule Your Space with professional Intruder Alarm Installation across Chesterfield, Sheffield, Derbyshire and South Yorkshire. NOX is an Ajax Authorised Installation Company, using Ajax as our preferred smart security platform while designing every system around the property first.
System in detail
Equipment and installations matched to the requirement
A selection of the real equipment, installed positions and customer-facing features used across suitable NOX projects.
Designed around the property
The right alarm is more than a hub and a few sensors
A useful system needs the correct mix of door protection, internal detection, photo verification, sirens, control devices and carefully selected external protection. NOX assesses entrances, movement routes, bedrooms, garages, outbuildings and daily routines before recommending equipment.
- ✓ Ajax wireless and hybrid alarm options
- ✓ MotionCam photo verification where suitable
- ✓ DoorProtect and internal movement detection
- ✓ KeyPad TouchScreen, KeyPad Plus, fobs and tags
- ✓ StreetSiren and internal siren options
- ✓ Night mode and part-setting
- ✓ Professional alarm monitoring
- ✓ Maintenance for new and suitable existing systems
Products and system options
Rule Your Space with Ajax
Ajax brings the alarm, visual verification, sirens, user controls, automation and selected video devices into one connected platform where suitable. NOX handles the survey, design, installation, configuration and ongoing support.
Ajax Hub and simple control
The control centre and user setup are configured around the property, users and daily routine.
MotionCam photo verification
Motion detection with image verification helps users and monitoring staff understand what caused an alarm.
Door and window protection
Slim opening detectors protect the entry points that matter and support night mode or part-setting.
Touchscreen keypad control
Clear visual controls, individual areas and user-friendly arming reduce mistakes at entry and exit.
Outdoor detection
Suitable external detectors add earlier warning while smart processing helps reduce false alarms.
App alerts
Instant app notifications provide clear information about alarm events and the area or camera involved.
Scheduled arming
Suitable Ajax systems can follow schedules and scenarios so protection remains consistent without relying on memory.
NOX external siren
A professionally positioned external siren adds a visible deterrent and clear local warning.
Product videos
See the technology in action
Explore the Ajax platform and individual products in motion. Final device selection still follows the property survey and the way the site will be used.
Ajax intruder protection
See how the Ajax platform brings detection, control and app management together.
Perimeter protection
See how external detection can add an earlier layer around the building.
How NOX delivers the project
From survey to handover and ongoing support
Security survey
We assess entry points, routines, risks, existing equipment and how you want to control the alarm.
System design
The quotation explains each recommended Ajax or alternative device, installation position and optional ongoing service.
Professional installation
Devices are positioned carefully, communication is tested and the system is configured around the property.
Handover and support
Users, app access, night mode, notifications and practical operation are explained before monitoring or maintenance is activated.
More detail
Installation, operation and long-term support
MotionCam and visual verification
Suitable Ajax MotionCam models combine motion detection with photo verification, helping authorised users or a monitoring service understand what caused an alarm. Device choice, permissions and image features are confirmed during system design.
Control that fits the customer
Use the Ajax app, keypad, tags or fobs depending on the people using the property. Individual users and operating modes can be configured during handover.
Monitoring and maintenance
Professional alarm handling, keyholder contact, system health checks, battery review, firmware updates and annual service records are available.
Traditional and existing systems
NOX also services and assesses suitable wired, hybrid and established alarm systems. A takeover inspection confirms condition, access and the sensible route forward.
Long-term protection
Build monitoring and maintenance into the alarm journey
The alarm can then connect to professional monitoring, planned servicing, CCTV and perimeter protection so the property has one joined-up protection strategy.
01Alarm Monitoring
Professional signal handling and agreed escalation beyond app alerts.
Explore service02Alarm MaintenancePlanned testing, battery checks, faults and system-health support.
Explore service03CCTV & VideoAdd recorded views around entrances, driveways and key areas.
Explore service04Perimeter ProtectionCreate earlier warning before activity reaches the building.
Explore serviceContinued support
Installed by NOX. Supported by NOX.
Installation is the start of the system lifecycle. Monitoring, maintenance, fault support and future changes can remain connected to the original design.
Monitoring
Professional oversight and agreed escalation when the property is unattended.
Maintenance
Planned inspections, testing, cleaning and system-health checks.
Priority Support
A straightforward contact route for faults, changes and future upgrades.
One Provider
Fire, CCTV, intruder and emergency-lighting support coordinated through one local point of contact.
Related services
Complete the system
Choose the next service that strengthens the same system, site or maintenance plan.
Alarm Monitoring
Move beyond app alerts with professional signal handling and agreed escalation.
View serviceAlarm Maintenance
Keep devices, batteries, communication and system health checked over time.
View serviceCCTV
Add useful recorded views around entrances, driveways and key areas.
View servicePerimeter Protection
Create earlier warning before activity reaches the building.
View serviceRelevant NOX work
Real installation examples
Genuine NOX projects showing the property type, equipment and work delivered.
Residential CCTV & Intruder · Chesterfield, Derbyshire
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.
Installed by NOXAjax intruder alarm · Black CCTV cameras · Ajax keypad · NOX external warning device
Read the project story →
Commercial alarm & CCTV · Buxton, Derbyshire
Intruder and nine-camera CCTV installation for Peak Electronic in Buxton
Peak Electronic in Buxton had older CCTV and alarm equipment that no longer reflected the level of control and coverage required across the premises. NOX assessed the existing setup, installed a modern Ajax intruder system and delivered nine-camera CCTV coverage with a clearer recording and live-viewing arrangement across the car park, entrances, road, gates and rear areas.
Installed by NOXAjax commercial intruder alarm · Nine-camera CCTV system · External CCTV coverage · Live viewing and recording · Commercial system upgrade
Read the project story →
Residential security · Sheffield, South Yorkshire
Residential CCTV and intruder protection
This Sheffield home required CCTV and intruder protection to work together around the front approach, driveway and main access points. NOX installed external cameras alongside an Ajax alarm system, using a visible external siren, door protection and a centrally connected hub for straightforward everyday control.
Installed by NOXResidential CCTV · Ajax intruder alarm · External cameras · Door protection · External warning siren · Sheffield installation
Read the project story →Local services
Related services in your area
Find the most relevant NOX installation, servicing and takeover options across our core service area.
Helpful guides
Plan intruder alarms that put you in control of your space with practical information
Practical answers covering specification, installation, maintenance and existing-system decisions before you request a survey or quotation.
Intruder Alarm GuidesHow much does an Ajax alarm cost?Ajax alarm cost depends on the property, device quantities, external areas, controls, communication and ongoing support—not a single fixed kit price.Intruder Alarm GuidesCan an alarm protect a garage or outbuilding?Often yes, but distance, construction, communication, power and how the building is used must be assessed before equipment is selected.Intruder Alarm GuidesHow often should an intruder alarm be serviced?A planned annual service is a sensible starting point for many intruder alarms, subject to the system, monitoring route, premises and applicable requirements.
Local coverage
Intruder alarms that put you in control of your space across Chesterfield, Sheffield and Derbyshire
Use the most relevant local page for area-specific services, nearby coverage and genuine NOX project experience.
DerbyshireChesterfieldLocal alarm, CCTV and fire safety support from NOX's Chesterfield base, covering homes, businesses, yards and larger multi-system sites.South YorkshireSheffieldResidential and commercial security systems across Sheffield, with particular focus on Dore, Totley, Ecclesall, Fulwood, Ranmoor and the wider South and West Sheffield area.DerbyshireDerbyshireProfessional fire and security installation, maintenance and takeovers across Derbyshire's towns, villages, rural properties and commercial sites.
A useful quotation
What to include with your enquiry
These details help NOX route the enquiry correctly and reduce unnecessary back-and-forth before a survey, service visit or quotation.
Premises and postcode
Include the building use, location, access restrictions and whether the site is occupied while work is planned.
Existing system details
Share panel, recorder or equipment photographs, approximate device quantities, known faults and available records.
Required outcome
Explain what the intruder alarms that put you in control of your space needs to achieve, any insurer or compliance requirement and the preferred project timescale.
Customer reviews
Trusted for clear advice, tidy work and proper handover
“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
“Really impressed with NOX Fire & Security. Isaac, Joe and James made everything super easy from start to finish — no pressure, just honest advice and a system tailored exactly to what I needed. Love how personalised it is, and being able to control my heating, washing machine and lights all from the same security app is a game changer. The lads were friendly, tidy, and took the time to show me how everything worked before they left. Feels good knowing it's all been done properly. Would definitely recommend.”Sasha BrailsfordAjax Smart Security & Automation
“Seamless journey from start to finish! I filled in the simple form and was soon contacted by the team. They were very knowledgeable, professional and really listened to my needs. I have since had a system installed. The price was much less than I had expected and so far the aftercare has been great. I can't recommend them enough!”Jeremy BuntingSecurity System Installation
Common questions
Clear answers before you commit
Are you Ajax authorised installers?
NOX operates as an Ajax Authorised Installation Company and uses Ajax as its preferred smart security platform. The property and requirement still come before the product choice.
What is Ajax MotionCam?
MotionCam is an Ajax motion detector with a built-in camera for photo verification. The exact photo features depend on the selected model, hub, permissions and system configuration.
Can the alarm include external protection?
Yes. External detection can be added where the site layout and survey support it, but perimeter protection is designed as its own layer rather than copied from the internal alarm layout.
Can you maintain an older alarm?
Yes. NOX can inspect many traditional wired, wireless and hybrid systems, subject to condition, access, parts availability and compatibility.
Next step
Discuss the right system with NOX
Tell us about the property, existing equipment and what you need the system to achieve. We will confirm the correct survey and quotation next step.