Description
VESDA VLF-250 LaserFOCUS Aspirating Smoke Detector (VLF-250-00)
The VESDA VLF-250 LaserFOCUS aspirating smoke detector (VLF-250-00) is designed to deliver very early warning fire detection in small, critical environments. Part of the Honeywell / Xtralis VESDA range, the VLF-250 continuously samples air through a micro-bore pipe network and analyses it using advanced laser-based smoke detection technology to identify smoke particles at extremely low concentrations.
Unlike traditional point detectors, the VESDA VLF 250 actively draws air from multiple sampling holes and detects smoke particles at extremely low concentrations. This makes it ideal for protecting equipment rooms, telecom infrastructure and other business-critical spaces where early detection is essential.
With a coverage area of up to 250 m², the VLF250 aspirating detector delivers reliable performance while maintaining a compact footprint and simplified installation.
The detector is commonly referred to as VESDA VLF 250, VLF250, or Xtralis VLF-250, all referencing the same compact LaserFOCUS aspirating smoke detector designed for small area fire protection.
What Is the VESDA VLF-250?
The Xtralis VLF-250 is part of the LaserFOCUS series of aspirating smoke detectors, designed specifically for small-area fire protection. The detector continuously draws air into a sampling pipe and passes it through a high-sensitivity detection chamber where laser-based technology identifies the presence of smoke at the earliest stage of a developing fire.
Because the VESDA VLF-250 aspirating detector actively samples air rather than waiting for smoke to reach a ceiling-mounted sensor, it can provide earlier warning compared to conventional smoke detectors.
The integrated display allows engineers to monitor smoke levels, system status and fault conditions directly on the unit.
Key Features
-
LaserFOCUS aspirating smoke detection technology
-
Very early warning detection performance
-
Coverage for areas up to 250 m²
-
Ultrasonic airflow sensing for accurate pipe monitoring
-
Laser-based absolute smoke detection
-
Programmable alarm thresholds
-
Clean air barrier optics protection
-
Instant recognition display for smoke level indication
-
Instant Fault Finder™ diagnostics
-
AutoLearn™ smoke and airflow calibration
-
Event logging capability for system diagnostics
These features allow the VESDA VLF-250 to maintain consistent detection sensitivity while minimising nuisance alarms.
Applications
The VESDA LaserFOCUS 250 is commonly installed in environments where early smoke detection is required within compact or equipment-focused spaces.
Typical applications include:
-
Small data centres and server rooms
-
Electrical switch rooms
-
Telecom exchanges
-
Control rooms
-
Air handling units
-
Utility control hubs
-
Railway signalling infrastructure
-
Equipment cabinets and enclosures
Because of its compact design and simplified pipe network, the VLF-250 VESDA detector is particularly suited to installations where space is limited but early warning protection is critical.
Technical Specifications
Model: VLF-250-00
Detector Type: LaserFOCUS Aspirating Smoke Detector
Coverage Area: Up to 250 m²
Detection Method: Laser-based smoke detection
Airflow Monitoring: Ultrasonic airflow sensing
Event Log: Up to 18,000 events
Power Supply: 24V DC nominal
Approvals: UL, ULC, FM, LPCB, VdS, CE, EN 54-20
EN 54-20 Classification
-
Class A – 12 sampling holes
-
Class B – 12 sampling holes
-
Class C – 12 sampling holes
System design should be verified using approved pipe design tools to ensure correct transport times and airflow performance.
VESDA VLF-250 Manual & Software
Documentation such as the VESDA VLF-250 manual, configuration guides and commissioning tools are available from the manufacturer, or linked at the bottom of this page. These resources provide detailed guidance on installation, pipe network design, and system configuration for LaserFOCUS aspirating smoke detectors.
Engineers commonly use these documents alongside pipe design tools to ensure the VLF-250 aspirating detector meets airflow and transport time requirements for the protected area.
VLF-250 vs VLF-500
The VESDA VLF series includes two primary models designed for different coverage requirements:
-
VLF-250 – coverage up to 250 m²
-
VLF-500 – coverage up to 500 m²
The VESDA VLF-250 is typically chosen for smaller environments or single-zone protection where a compact aspirating detector is required.
Why Choose the VESDA VLF-250?
The VESDA VLF-250 aspirating smoke detector is ideal for installations where:
-
Early smoke detection is required in small areas
-
Equipment protection is critical
-
Conventional smoke detectors may respond too slowly
-
Reliable aspirating detection is needed without complex multi-pipe systems
For compact environments and equipment-focused fire protection, the Xtralis VESDA VLF-250 delivers dependable very early warning performance with simplified installation and commissioning.
Datasheet