The System Sensor DNR InnovairFlex Intelligent Non-Delay Duct Smoke Detector is a high-quality smoke detector designed for commercial and industrial settings. With its innovative non-delay feature and smart design, it provides reliable protection against smoke hazards. As a trusted brand in the industry, System Sensor ensures top-notch performance and safety for your facility. The DNR model from System Sensor is a dependable choice for fire protection equipment, keeping your property secure and compliant with safety regulations.