Clarke's PyroGuard LP Spark Sensor

(1) New Clarke's PyroGuard Spark Detector; S/N XX11030607LP Sensors per Duct: 2 for pipes up to 79" in diameter Type of Wire: Non-shielded, stranded 12-18 gauge For pipes up to 79" in diameter. Durable Cast Aluminum Enclosure. Size: L 7-5/8" x W 3-1/8" x H 2-7/8" Voltage: 20VDC Current: 9.85ma Viewing Angle: 120° @ 50% on axis Operating Temp: -40°F to 140°F Spectral Response: 400-1100 nm Sensitivity: 136uW/sr @ 940nm @ 1 Meter Effective Sensitive Area: 100 mm^2 Enclosure Type: NEMA 4X Made in USA Includes SO Cord