System Sensor D2 Fire Alarm Duct
System Sensor D2 Fire Alarm Duct
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.
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).
Couldn't load pickup availability
You will be prompted to create an account or sign in to complete your purchase.
As an eBay Partner, we may be compensated if you make a purchase.
System Sensor D2 Fire Alarm Duct
The System Sensor D2 Fire Alarm Duct is designed to detect smoke within HVAC ducts, ensuring early warning of fire hazards in ventilation systems. It integrates seamlessly with fire alarm panels to enhance safety monitoring.
- High sensitivity detection enables rapid identification of smoke particles in duct airflow environments.
- Compatible with most fire alarm control panels for versatile installation across various systems.
- Robust construction with durable materials ensures reliable operation in demanding duct conditions.
- Simple mounting design reduces installation time and facilitates maintenance access.
- UL Listed and NFPA compliant to meet strict fire safety and quality standards.
Compared to other duct smoke detectors on the market, the System Sensor D2 offers a balance of high performance and ease of installation, improving on older models by providing greater sensitivity and more reliable connectivity with existing fire alarm systems.
Enhanced Detection and System Integration
This detector utilizes advanced sensing technology that improves smoke particle recognition even in high airflow conditions, reducing false alarms while maintaining quick response times. Its compatibility with a wide range of fire alarm control units ensures flexible deployment across commercial and industrial HVAC setups. The D2 model is engineered to withstand harsh duct environments, providing consistent performance without frequent recalibration or replacement.
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.
View full details

About us
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.
For additional details, please review our Terms of Service, Shipping Policy and Refund Policy before placing your order. Please contact us with any questions.