THTDSF04 | Duct Safe Ni1000-891 4" | Tasseron Sensors

**Duct Safe Ni1000-891 4" (THTDSF04) by Tasseron Sensors** The Tasseron Sensors Ni1000 Series, Duct Safe Ni1000-891 4" (THTDSF04), is a rugged and reliable duct smoke detector designed for early and accurate fire detection in air handling systems. With a 4" duct size, the THTDSF04 features a photoelectric sensor that detects smoke particles in the air, providing fast and reliable detection of smoke and fire hazards. The Duct Safe Ni1000 series is engineered to meet the stringent requirements of UL 268 and UL 555c, ensuring compliance with industry safety standards. Its rugged construction and durable design make it ideal for harsh industrial environments. The THTDSF04 is easy to install and maintain, with a simple mounting design and accessible wiring connections. It has a wide operating voltage range of 12 to 33 VDC, allowing for flexibility in system design and installation. By choosing the THTDSF04, you invest in peace of mind and proactive fire protection for your industrial facilities. Shop now at our HVAC supply store for the best prices and fast shipping on your essential industrial products!