System Sensor LD4S Duct Smoke Detector

PLEASE REVIEW: We would ask that potential buyers please view the photographs carefully, and understand what you are buying. All questions should be submitted PRIOR to making your purchase. *Your purchase includes a 30 day warranty.* We cannot negotiate price or terms after the sale. Payment is expected within 24 hours, please. We appreciate your consideration! (bcd: f-6-b)