Density® 900 Lite · Security Fog System

Fast fog for medium spaces. Easy to install, hard to ignore.

Density® 900 Lite is premium fog protection for premises up to 170 m² — 500 m³ of dense fog in 48 seconds, with an orientable nozzle that fits any installation and a 2-year warranty.

Get a quote → See how it works
Covers up to 170 m² Orientable nozzle · easy fit 2-year warranty · ActiveCloud-ready
Medium-range protection
Food-environment authorisedSafe around stock & food
2-year warrantyManufacturer-backed
ActiveCloud & Active Server readyFree remote access
Density® GlobalManufactured in Italy by NOREL
Why fog stops theft

An alarm tells you it happened. Fog stops it happening.

A typical break-in is over in two to three minutes — long before anyone can respond. Security fog removes the one thing a thief needs: visibility.

01
Trigger

Your alarm, a sensor or a panic input fires the unit.

02
Dense fog, fast

Once armed, the 900 Lite floods the room with non-toxic fog in 48 seconds from trigger.

03
Zero visibility

The intruder can’t see the goods, the exit, or their own hands.

04
They leave empty-handed

Nothing to grab, nowhere to go. Most intruders abandon within seconds.

97%

of theft attempts at fog-protected sites are stopped. A break-in is usually over in under two minutes — fog closes that gap in seconds, where an alarm only raises it.

Density® manufacturer figure. Non-toxic, residue-light fog.
See it in action

Watch the 900 Lite fill a medium space with fog.

Why the 900 Lite

Premium fog for medium premises, made simple.

Every figure below comes straight from the Density® 900 Lite datasheet.

500 m³ of fog in 48 seconds

Fast and dense — a single shot fills 500 m³ (EN) or up to 1,500 m³ commercial, covering premises from 5 to 170 m².

Easy installation across any space

The orientable multidirectional nozzle adapts to vertical or horizontal mounting — perfect for retail, offices, and larger homes without custom work.

Low power, over an hour backup

Around 48 W in use. With a 12V/2Ah backup battery, it keeps working for over an hour if mains power is lost.

Safe around stock and food

The fog fluid is authorised for food environments — clean, non-toxic and residue-light, suited to retail, stockrooms and larger domestic spaces.

Compact yet substantial

Just 9 kg at 390 × 300 × 130 mm, available in white or black — compact enough to fit discreetly, robust enough for commercial use.

ActiveCloud & APIs, free to use

Optional ActiveCloud board with Wi-Fi and IP, plus Active Server ready. APIs available for custom integration — no subscription required.

Right for your space?

Built for medium to larger premises.

The 900 Lite is designed for spaces from 5 to 170 m². For smaller areas, the Basic offers entry-level protection; for larger installations, the 900 or HP lines scale further.

Larger homes & apartmentsFull protection for multi-room residences and converted spaces.
Medium retail and boutiquesDepartment stores, galleries and medium retail units up to 170 m².
Off-licences & supermarketsHigh-value stock, food-environment-safe fog, multi-zone capable.
Salons, restaurants & hospitalityEasy to mount, discreet during trading, orientable nozzle fits tight spaces.
Offices and commercialProtect IT suites, server rooms and executive areas after hours.
Warehouses & storageScalable protection for larger floor areas with adaptable nozzle mounting.

Not sure which model suits your floor area? Tell us your space and we’ll spec it for you.

How it works

From trigger to total obscuration in 48 seconds.

STEP 01

Detect

An intrusion is detected by your alarm system, a sensor or a panic input.

STEP 02

Fire

The signal triggers the 900 Lite through one of its two inputs — firing the moment it’s armed and triggered.

STEP 03

Fog

Dense fog floods the protected area — up to 1,500 m³ commercial per shot, and 3 shots from a full fluid bag give 4,500 m³ total.

STEP 04

Alert

With ActiveCloud fitted, you’re notified remotely and can monitor or activate the unit from anywhere.

The Density difference

Not all medium-range fog is equal.

Orientable multidirectional nozzleAdapts to vertical or horizontal mounting — no custom ducting needed.
ActiveCloud & Active Server readyOptional boards with 2×128-bit encryption for secure remote access, APIs available.
High output, medium power500 m³ in 48 seconds at just 48 W average — serious coverage without heavy infrastructure.
2-year warranty, food-safe fluidFull manufacturer backing, non-toxic fog authorised for food environments.

Already have an alarm?

The 900 Lite integrates with intruder and hold-up alarm systems through its two cabled inputs and three outputs — adding a powerful physical deterrent on top of detection.

Works alongside your existing setup.

Technical detail

Density® 900 Lite specifications.

Straight from the manufacturer datasheet (v2.9, June 2025). For the installer’s full document, request the PDF.

General
Weight9 kg
Dimensions390 × 300 × 130 mm
ColourWhite or black
Heating timeAround 2 hours from cold
Operating time without mainsOver 1 hour (12V/2Ah battery, not included)
Energy consumption48 W average (after heat-up); 280 W heater peak
USB port for monitoringYes (Windows and Linux)
Adjustable nozzleYes, multidirectional · orientable
Fog generator
Suggested area5 to 170 m²
Max fog, single shot500 m³ (EN)
Maximum shooting time48 seconds
Max fog, full fluid bag1,500 m³ (3 shots at max)
Fog tank capacity1 L
Shooting time programmableYes
Nozzle extensionYes (optional, 5 cm or 10 cm)
Vertical mountingYes
Horizontal mountingYes
Inputs / outputs & communication
Electronic board2 cabled inputs (arming & shooting) / 3 outputs (empty bag, shoot confirm, system failure)
Serial ports2 × RS232 for optional boards
ActiveCloud board (IP / Wi-Fi)Optional · 2×128-bit encryption · free access
Active Server boardOptional
Wi-Fi antennaOptional
Development APIsAvailable for customisation
Electrical
Mains power230 V AC or 120 V AC
Average consumption48 W (after heat-up)
Heater max power280 W (at startup)
Backup battery12V/2Ah (not included)

Heating time is the initial warm-up from cold; in armed standby the unit is ready to fire. ActiveCloud and Active Server boards are optional. 2-year warranty.

★★★★★

Rated 4.9/5 by UK businesses protecting their premises with Density.

★★★★★
“Short, outcome-focused review goes here.”
Name · Sector · UK
★★★★★
“One or two sentences. Specific beats generic.”
Name · Sector · UK
★★★★★
“Keep it short so all three read at a glance.”
Name · Sector · UK

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The Density range

Different size space? Compare models.

Density 900Up to 100 m² · 900 m³
Density 2400 LiteUp to 270 m² · 2,400 m³
See all modelsThe full Density range

Protecting a specific type of premises? See our sector guides.

Get a price for your site.

Tell us about the space you want to protect and get an indicative price in minutes — or talk to a UK specialist.

Free, no-obligation estimate UK-based support & supply Specced to your floor area, not a generic kit

No fixed list price — your quote is specced to your floor area. Get an instant estimate.

Prefer to talk? 0330 133 8990

Get your instant estimate

Answer a few quick questions about your space and get an indicative price.

Prefer a manual quote? Request a callback · Datasheet (PDF)

Common questions

Before you ask us — the basics.

Is the fog safe for people, stock and equipment?
Yes. The fog is non-toxic and the fluid is authorised for food environments, so it suits retail, stockrooms and larger homes. It leaves minimal residue and disperses after ventilation.
How big an area can the 900 Lite protect?
The 900 Lite is suggested for premises from 5 to 170 m². A single shot emits 500 m³ (EN) or 1,500 m³ commercial, and a full fluid bag delivers 1,500 m³ total (3 shots at max). For larger areas we’d spec the 900 or HP lines.
What happens during a power cut?
The 900 Lite requires a 12V/2Ah backup battery (not included) that keeps it operating for over an hour if mains power is lost.
Will it work with my existing alarm?
In most cases, yes. The 900 Lite has two cabled inputs and three cabled outputs to integrate with intruder and hold-up alarm systems, plus RS232 serial ports for connected setups.
How much does the Density 900 Lite cost?
There is no fixed list price — the cost depends on your floor area, installation requirements and optional features (such as ActiveCloud). Get an indicative figure in minutes with our free instant estimate tool, or request a callback for a formal quote.
Will one 900 Lite cover a medium showroom or retail unit?
Yes. The 900 Lite is designed for premises up to 170 m², which covers most medium retail showrooms and single-unit commercial spaces. A single shot delivers 500 m³ (EN) or up to 1,500 m³ commercial. For spaces larger than 170 m², we’d recommend the 900 or HP range.