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Fire-Lite

Fire-Lite SD355T Fire Alarm Smoke + Thermal Detector Head

Fire-Lite SD355T Fire Alarm Smoke + Thermal Detector Head

Regular price $17.96 USD
Regular price Sale price $17.96 USD
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Condition: Used

[Standard Used Item Notes] This item is USED. Only the components visible in the photographs or explicitly mentioned in the listing are included. Peripheral accessories (such as keys, bases, mounting hardware, etc.) are not included unless otherwise stated. The item in the photograph may not be the exact one you receive; however, we strive to portray the average condition of all items accurately. Please carefully review this listing and its photos to assess the condition and contents. If you have any questions or require additional details, feel free to message us, and we will be happy to assist you.

Quantity

Low stock: 1 left

Storewide Quantity discount: Save 5% on 2 items, 8% on 3 items, and 10% on 4+ items (applies automatically at checkout).

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Fire-Lite SD355T Fire Alarm Smoke + Thermal Detector Head - This advanced diagnostic sensor provides reliable, multi-criteria life safety protection by combining photoelectric smoke detection with fixed-temperature thermal sensing. - 135°F fixed temperature rating - 15 to 32 VDC operating voltage - 300 µA standby current - 0.5% to 4.0% per foot smoke sensitivity range - 2.1 inches height with base

Unlike legacy smoke detectors that rely on a single sensing element, this intelligent device utilizes sophisticated algorithms to distinguish between nuisance alarms and actual fire conditions. By integrating both thermal and optical detection, it offers a more robust and responsive monitoring solution than standard single-technology sensors found in older facility infrastructures.

Enhanced Detection Performance

The SD355T utilizes advanced digital signal processing to maintain high precision in diverse environments, minimizing false triggers while ensuring rapid response times. Its integrated thermal sensor provides a critical secondary layer of validation, allowing the system to verify fire signatures with greater speed and reliability, which is essential for maintaining code compliance and protecting high-value assets across commercial and industrial properties.

This item description was generated using artificial intelligence and may contain errors. Specifications and compatibility should always be verified using official manufacturer documentation and, where applicable, by a qualified or licensed fire alarm technician.

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We specialize in new, used, and surplus fire alarm and life-safety equipment. Our inventory includes control panels, modules, power supplies, annunciators, detectors, and related accessories from leading manufacturers. Listings reflect current, in-stock availability and are updated regularly. Orders ship quickly and are packed with care.

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