The Totaline® P270-D4120W watertight 4-wire photoelectric duct smoke detector is UL listed as a watertight enclosure providing protection against falling dirt, rain, windblown dust, splashing and hose directed water. D4120W duct smoke detector features a pivoting housing that fits various applications: both square and rectangular footprints mount to round or rectangular duct work. This unit senses smoke in the most challenging conditions, operating in airflow speeds of 100 to 4,000 feet per minute, temperatures of –4°F to 158°F, and a humidity range of 0 to 95 percent (non-condensing). A plug-in sensor head offers superior false alarm immunity. These features, plus a NEMA 4 rating, allow operators to mount the detector to rooftop HVAC equipment or use the detector in other harsh environments.
SPECIFICATIONS
Physical
• Size: (Rectangular Dimensions) 14.38 in (37 cm) Length; 5 in (12.74 cm) Width; 2.5 in (6.36 cm) Depth
• Size: (Square Dimensions) 7.75 in (19.7 cm) Length; 9 in (22.9 cm) Width; 2.5 in (6.35 cm) Depth
• Weight: 2.5 lbs (1.14 kg)
• Operating Temperature Range: –4° to 158°F (–20° to 70°C)
• Storage Temperature Range: –22° to 158°F (–30° to 70°C)
• Operating Humidity Range: 0% to 95% relative humidity non-condensing
• Air Duct Velocity: 100 to 4000 ft/min (0.5 to 20.32 m/sec)
• NEMA Enclosure Rating: Type 4 – Watertight Indoor/Outdoor
