Reliable HVAC Smoke Detection for Commercial & Industrial Applications
The System Sensor D4120 Duct Smoke Detector is engineered to detect smoke within HVAC duct systems, helping prevent the circulation of smoke throughout a building. Designed for 4-wire systems, this unit integrates seamlessly into commercial fire alarm systems and building automation controls.
Ideal for compliance with NFPA and local fire code requirements, the D4120 provides early detection within air handling systems to help protect occupants, equipment, and property.
🚨 Key Features
- 4-Wire Duct Smoke Detector
- Compatible with System Sensor plug-in smoke detector heads
- Clear cover for easy visual inspection
- Built-in test/reset switch
- Magnet test capability
- LED status indicators
- Low-flow and high-flow duct compatibility
- Designed for commercial HVAC systems
🏢 Designed For
- Commercial office buildings
- Industrial facilities
- Multi-residential buildings
- Hospitals & healthcare facilities
- Schools & institutions
- Warehouses & distribution centers
