Click to expand Tap to zoom System Sensor | D4240 Duct Detector Photoelectric 4 Wire Low Flow SKU SS-DD09-0428 Save Liquid error (snippets/product-badge line 32): Computation results in '-Infinity'% $282.99 | / Availability: Out of stock call for lead time 1 2 3 4 5 6 7 8 9 10+ Quantity Quantity Add to cart