X-Sense Smart Smoke Detectors with SBS50 Base 3 Detectors, white

X-Sense Smart Smoke Detector FS51 with SBS50 Base Station, Wi-Fi (SA454)Item is used and shows signs of usage (scratches, scuffs, dust, etc.) Please view ALL pictures. Item has been handled for inspection - Please anticipate signs of handling (fingerprints, lint, etc.) Outer packaging may have cosmetic damage. Item may not ship in original packaging. Includes all items seen in pictures only. Includes SBS50 base station for centralized smoke alarm control Compatible with the X-Sense Home Security App for remote monitoring Battery Powered (Not included) Letters and Numbers in ( ) is the items location and is for our reference ONLY.