invacuation
Invacuation systems for when evacuation is no longer the safest option.

Invacuation is the opposite of evacuation. Instead of leaving the building, people are directed to move to a safer area within it, or to lock down where they are. It is used when leaving is more dangerous than staying, for example during an external threat, an intruder, severe weather or an incident outside the premises. Invacuation and lockdown systems are increasingly used in schools, care settings, retail and commercial buildings.
We can install a separate invacuation or lockdown system, or add the feature to an existing addressable fire alarm system. The lockdown signal uses a distinct tone or message so it is never confused with the fire alarm, making it clear to everyone whether they should evacuate or move to safety.
What we provide:
- Standalone invacuation and lockdown systems
- Lockdown features added to existing addressable fire alarm systems
- Clearly distinguished alarm and lockdown signals
- Servicing and maintenance
FREQUENTLY ASKED
QUESTIONS
What is invacuation?
Invacuation is the opposite of evacuation. Rather than leaving the building, people are directed to move to a safer area inside it, or to stay where they are, because leaving would put them in greater danger. It is a key part of keeping people safe from threats that come from outside the building.
What is the difference between invacuation, lockdown and evacuation?
Evacuation means leaving the building, usually in a fire. Invacuation means moving to a safer area within the building. Lockdown means securing people in place, often locking doors and staying put, to keep a threat out. Many premises need plans for all three, and we can help put the systems in place.
When would you use invacuation instead of evacuation?
Invacuation or lockdown is used when leaving the building would be more dangerous than staying, for example during an incident outside the premises, a chemical or gas release nearby, severe weather, or an intruder or security threat. In these situations, moving people inside to safety is the right response.
Who needs an invacuation or lockdown system?
These systems are increasingly used in schools, colleges, care settings, retail, offices and other public buildings, anywhere there is a duty to protect people from external or security threats. If your premises could face a situation where staying inside is safer than leaving, an invacuation plan is worth considering.
How does an invacuation or lockdown system work?
The system raises a clear, distinct alert that tells everyone to move to safety or lock down, rather than evacuate. Staff and occupants then follow your agreed procedure. The system can be a standalone installation or built into your fire alarm, and we design it around how your building is used.
How is the lockdown signal different from the fire alarm?
The lockdown signal uses a different tone or a spoken message so it is never confused with the fire alarm. This is essential, because the two require opposite responses: the fire alarm tells people to get out, while the lockdown alert tells them to stay in or move to a safer area.
Can invacuation be added to my existing fire alarm system?
In many cases, yes. If you have an addressable fire alarm system, we can often add invacuation and lockdown features to it, using a separate, clearly distinguished signal. Alternatively, we can install a standalone system, and we will advise on the best approach for your premises.
Is an invacuation or lockdown system a legal requirement?
There is no single law requiring invacuation in the way fire safety is required, but having a lockdown plan is widely recommended as part of your health, safety and security duties. With growing focus on protecting premises from security threats, more organisations are putting these systems in place, and we can help you do so.
How is a lockdown activated?
A lockdown is usually triggered manually from one or more activation points by a nominated person, so it can be raised quickly when needed. We will set up the activation method and points to suit your building and your procedures.
Can you help train our staff on lockdown procedures?
Yes. Alongside installing the system, we can advise on your invacuation and lockdown procedures, and we offer training so your team understands the signals and knows exactly what to do. Clear procedures and confident staff are just as important as the equipment.
What areas do you cover?
We are based in Burgess Hill, West Sussex, and install, service and maintain invacuation and lockdown systems across Sussex, Surrey, Kent and London.
Do you install fire alarms in homes as well as businesses?
Yes. We design, install and maintain fire alarm systems for both commercial and domestic properties, tailoring each one to the size, layout and risk of the building.
Contact us to discuss adding invacuation or lockdown to your premises.
Address
Unit 3
Stone House Farm
Handcross Road
Plummers Plain
RH13 6NZ
Phone
Open Hours
Monday – Thursday: 9.00-5.00
Friday: 9.00-4.00
If you’d like to enquire about any of our fire and security services, please feel free to contact us on 01444 241424 where a member of our team will be happy to help.
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