System Sensor D4120 4-Wire Duct Smoke Detector for AHU/AC Unit
This listing features a System Sensor D4120 4-wire duct smoke detector for HVAC applications such as an AC unit or air handling unit (AHU). Condition is new, and it ships with free shipping. Use it to help monitor ductwork for smoke as part of a compatible fire alarm or building safety system. The description provided is limited, so check the listing for details on included parts, compatibility, required accessories, and installation requirements before purchase.
| Location | San Antonio US |
| Shipping | Free shipping (check listing for details) |
| Seller |
fire-alarm-warehouse
99.1% positive · 3335 feedback
|
| Listing | FixedPrice · Active |
| Start time | 2025-11-17T02:58:34.000Z |
| Unit Type | Unit |
| Model | D4120 |
| Unit Quantity | 1 |
| Country of Origin | Mexico |
| UPC | 0783863034411 |
| Brand | System Sensor |
| Type | Smoke Detectors |
| MPN | D4120 |
System Sensor D4120 4-Wire Duct Smoke Detector New Fire Alarm For AC Unit AHU
Brand New Condition. Comes with Smoke Detector Head, Installation Instructions and bag with short sample tube end cap and 3 screws.Check out my Store for more duct detectors from System Sensor and other manufactures.Thanks and Happy Bidding!
