Fire & Security Guides
Fire & Security guides and FAQs
Detailed guidance for homeowners, responsible persons and businesses researching fire alarms, emergency lighting, CCTV, intruder alarms, monitoring, servicing, repairs and existing-system takeovers across Chesterfield, Sheffield and Derbyshire.
What the guides help you decide
Practical answers before you book a survey, service or takeover visit
Use the guides to compare system types, understand servicing, prepare the right information for a quotation and decide whether existing equipment can be retained, repaired or upgraded.
Fire alarms
Understand installation, servicing, records, takeovers and the information that helps prepare a clearer fire-alarm quote.
Emergency lighting
Learn what routine testing involves, when fittings may need replacing and how lighting work can be coordinated with wider compliance support.
CCTV & intruder
Compare coverage, control, evidence quality, app use, monitoring and the practical factors that shape a better security layout.
Servicing & takeovers
See how NOX approaches annual maintenance, monitoring, repairs, upgrades and suitable takeover support for existing systems.
Browse by topic
Full guides for larger questions, short FAQs inside the relevant service page
Each guide answers a genuine customer question, explains the practical points to consider and connects you to the most relevant NOX service or project.
Maintenance & Monitoring Guides
How often should an alarm or CCTV system be serviced?
Why regular servicing matters, what an engineer should check and how annual support helps prevent avoidable faults.
Read guide →
CCTV Guides
Choosing CCTV for a home or business
Camera count is only one part of the decision. Useful CCTV starts with views, lighting, recording and how the footage will be used.
Read guide →
Maintenance & Monitoring Guides
Can an existing alarm or CCTV system be taken over?
Existing equipment does not always need replacing. A proper inspection can identify what can be retained, repaired or upgraded.
Read guide →
Fire Alarm Guides
Fire alarm servicing and emergency lighting: keeping annual support organised
Commercial fire-safety support is easier to manage when servicing, records, defects and renewal dates are clearly coordinated.
Read guide →
Fire Alarm Guides
How often should a commercial fire alarm be serviced?
Commercial fire alarms normally need planned professional servicing at intervals suited to the system, premises and applicable requirements, with records and defects kept clear.
Read guide →
Fire Alarm Guides
What is included in a fire alarm service?
A fire alarm service should have a defined inspection and testing scope, clear records, identified defects and a separate route for remedial work.
Read guide →
Fire Alarm Guides
Can a new company take over an existing fire alarm?
Often yes, but a responsible takeover depends on system access, condition, documentation, compatibility and available parts.
Read guide →Fire Alarm Guides
Conventional versus addressable fire alarm systems
Both system types can be appropriate. The right choice depends on building complexity, required information, expansion and the complete fire-safety design.
Read guide →
Fire Alarm Guides
What information is needed for a fire alarm quote?
Property use, plans, fire information, existing equipment, device quantities, faults and access all help NOX define the correct survey and quotation route.
Read guide →
Emergency Lighting Guides
How often should emergency lighting be tested?
Emergency lighting needs routine functional checks and periodic full-duration testing, with records and failed fittings dealt with clearly.
Read guide →Emergency Lighting Guides
What is a three-hour emergency-lighting test?
A full-duration test checks whether emergency fittings can continue operating for their rated period, commonly three hours, rather than only switching on briefly.
Read guide →CCTV Guides
How many CCTV cameras does a commercial site need?
The right number comes from the required views and evidence, not a standard package. Entrances, stock, vehicles, yards and blind spots must be mapped first.
Read guide →
CCTV Guides
How many CCTV cameras does a house need?
Most homes need views based on entrances, driveway, side access, rear garden and outbuildings. The correct number follows the property layout and required detail.
Read guide →
Maintenance & Monitoring Guides
How often should CCTV be maintained?
CCTV should be checked regularly enough to keep views, recording, storage and remote access useful. Annual professional maintenance is a common starting point.
Read guide →
Intruder Alarm Guides
How 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.
Read guide →
Intruder Alarm Guides
Can 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.
Read guide →
Maintenance & Monitoring Guides
App alerts versus professional alarm monitoring
An app notification goes to the user. Professional monitoring sends agreed alarm events through a monitored signalling route with a defined keyholder process.
Read guide →
Intruder Alarm Guides
What is perimeter protection?
Perimeter protection uses carefully positioned external detection, cameras or both to identify activity around the property before entry to the main building.
Read guide →Emergency Lighting Guides
When should emergency-lighting fittings be replaced?
Emergency-lighting fittings should be repaired or replaced when they fail testing, cannot provide the required duration or are no longer economical or supportable.
Read guide →
Fire Alarm Guides
Can fire-alarm and emergency-lighting visits be combined?
The visits can often be coordinated for convenience, but each system still needs its own agreed scope, testing, records and remedial route.
Read guide →Intruder Alarm Guides
How 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.
Read guide →Next step
Need an answer about your own building or system?
Use the guide as a starting point, then share the property, existing equipment and the work you are considering. NOX will confirm the most appropriate survey, service or quotation.