{"product_id":"vlf-250-vesda-very-early-warning-aspirating-smoke-detector-for-small-areas","title":"VLF-250 | VESDA Very Early Warning Aspirating Smoke Detector for Small Areas","description":"\u003ch4\u003eDescription \u003c\/h4\u003e\n\u003cp\u003eThe VESDA VLF-250 is an advanced very early warning smoke detector designed for small, business-critical environments up to 250 m² (2,690 sq. ft.). It continuously samples air through a pipe network and uses laser-based light scattering technology to detect even the smallest traces of smoke. With intuitive displays and built-in fault diagnostics, the VLF-250 ensures fast response, reliable performance, and simplified serviceability.\u003c\/p\u003e\n\u003cp data-start=\"284\" data-end=\"574\" class=\"\"\u003e \u003c\/p\u003e\n\u003cp data-start=\"284\" data-end=\"574\" class=\"\"\u003e \u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications \u003c\/h4\u003e\n\u003ctable style=\"width: 100.083%; height: 411.47px;\"\u003e\n\u003ctbody\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 32.2624%; height: 19.5938px;\"\u003e\u003cstrong\u003eCondition\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 64.6023%; height: 19.5938px;\"\u003eNew\/Never Used Surplus\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 32.2624%; height: 19.5938px;\"\u003e\u003cstrong\u003eBrand\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 64.6023%; height: 19.5938px;\"\u003eVESDA (Xtralis)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 32.2624%; height: 19.5938px;\"\u003e\u003cstrong\u003eCategory\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 64.6023%; height: 19.5938px;\"\u003eFire Safety\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 32.2624%; height: 19.5938px;\"\u003e\u003cstrong\u003ePart Number\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 64.6023%; height: 19.5938px;\"\u003eVLF-250\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 32.2624%; height: 19.5938px;\"\u003e\u003cstrong\u003eSubcategory\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 64.6023%; height: 19.5938px;\"\u003eAspirating Smoke Detectors\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 32.2624%; height: 19.5938px;\"\u003e\u003cstrong\u003eCoverage Area\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 64.6023%; height: 19.5938px;\"\u003eUp to 250 m² (2,690 sq. ft.)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 32.2624%; height: 19.5938px;\"\u003e\u003cstrong\u003eDetection Method\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 64.6023%; height: 19.5938px;\"\u003eLaser-based light scattering\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 32.2624%; height: 19.5938px;\"\u003e\u003cstrong\u003eFlow Sensing\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 64.6023%; height: 19.5938px;\"\u003ePatented ultrasonic airflow monitoring\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 32.2624%; height: 19.5938px;\"\u003e\u003cstrong\u003eAlarm Threshold Range\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 64.6023%; height: 19.5938px;\"\u003e0.025 – 20% obs\/m (programmable)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 32.2624%; height: 19.5938px;\"\u003e\u003cstrong\u003eEvent Log Capacity\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 64.6023%; height: 19.5938px;\"\u003eUp to 18,000 events\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 32.2624%; height: 19.5938px;\"\u003e\u003cstrong\u003eInputs\/Outputs\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 64.6023%; height: 19.5938px;\"\u003e3 relay outputs (Fire 1, Action, Fault), RS232, GPI\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 32.2624%; height: 19.5938px;\"\u003e\u003cstrong\u003eOperating Voltage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 64.6023%; height: 19.5938px;\"\u003e18–30 VDC (nominal 24 VDC)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 32.2624%; height: 19.5938px;\"\u003e\u003cstrong\u003eCurrent Consumption\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 64.6023%; height: 19.5938px;\"\u003e220 mA (standby), 295 mA (alarm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 32.2624%; height: 19.5938px;\"\u003e\u003cstrong\u003eOperating Temp\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 64.6023%; height: 19.5938px;\"\u003e0°C to 38°C (ambient), -20°C to 60°C (sampled air)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 32.2624%; height: 19.5938px;\"\u003e\u003cstrong\u003eHumidity Range\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 64.6023%; height: 19.5938px;\"\u003e5% – 95% RH, non-condensing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 32.2624%; height: 19.5938px;\"\u003e\u003cstrong\u003eSampling Pipe\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 64.6023%; height: 19.5938px;\"\u003e1 × 25 m or 2 × 15 m branches (max 12 holes)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 32.2624%; height: 19.5938px;\"\u003e\u003cstrong\u003ePipe Sizes\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 64.6023%; height: 19.5938px;\"\u003eMetric 25 mm (1.05 in.), IPS 21 mm (¾ in.)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 32.2624%; height: 19.5938px;\"\u003e\u003cstrong\u003eIP Rating\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 64.6023%; height: 19.5938px;\"\u003eIP30\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 32.2624%; height: 19.5938px;\"\u003e\u003cstrong\u003eDimensions (W×H×D)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 64.6023%; height: 19.5938px;\"\u003e256 × 183 × 92 mm (10.1 × 7.2 × 3.6 in.)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 32.2624%; height: 19.5938px;\"\u003e\u003cstrong\u003eWeight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 64.6023%; height: 19.5938px;\"\u003e4.4 lbs (2 kg)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch4\u003eInformation About VLF-250\u003c\/h4\u003e\n\u003cp\u003eThe VLF-250 is part of the VESDA VLF series of aspirating smoke detectors engineered by Xtralis for compact spaces requiring ultra-sensitive detection. It incorporates patented ultrasonic flow sensing, laser-based absolute smoke detection, and a Smoke Dial™ for immediate visual feedback. Designed for compatibility with pre-engineered pipe networks, it provides versatile alarm threshold settings, AutoLearn™ functions, and event logging for up to 18,000 records. This detector is ideal for protecting small server rooms, telecommunications facilities, and mission-critical control spaces.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eKey Features:\u003c\/strong\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eEarly Warning Protection: Detects smoke at very low concentrations for areas under 250 m².\u003c\/li\u003e\n\u003cli\u003eUltrasonic Flow Sensing: Provides accurate airflow readings, unaffected by temperature or contamination.\u003c\/li\u003e\n\u003cli\u003eLaser-Based Detection: Ensures precise and stable smoke measurements.\u003c\/li\u003e\n\u003cli\u003eSmoke Dial™ Display: Enables quick visual recognition of smoke events from a distance.\u003c\/li\u003e\n\u003cli\u003eAutoLearn™ Functions: Automatically adjusts smoke and airflow thresholds to the environment.\u003c\/li\u003e\n\u003cli\u003eEvent Logging: Stores up to 18,000 time-stamped events for smoke, flow, faults, and detector status.\u003c\/li\u003e\n\u003cli\u003eBuilt-In Fault Diagnostics: Instant Fault Finder™ simplifies troubleshooting and maintenance.\u003c\/li\u003e\n\u003cli\u003eFlexible Pipe Options: Supports metric and American standard pipe sizes for installation versatility.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe VLF-250 delivers the reliability and precision required for protecting small, business-critical environments where downtime or fire damage is not acceptable.\u003c\/p\u003e","brand":"VESDA","offers":[{"title":"Default Title","offer_id":49105182523648,"sku":"VLF-250","price":4108.65,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0388\/5331\/2557\/files\/hbt-fire-vlf-250-vesda-vlf-250-smoke-detector-primaryimage.jpg?v=1785542035","url":"https:\/\/alotechparts.com\/products\/vlf-250-vesda-very-early-warning-aspirating-smoke-detector-for-small-areas","provider":"Alo Tech Solutions","version":"1.0","type":"link"}