Hours Of Operations ADT Maryland Kensington ADT Hours of Operation and Locations in Kensington, MD 4.7 - 140 votes 1 Locations in Kensington www.adt.com ADT Hours Category: Home & Garden ADT - Kensington, MD 20891 (301) 761-0154 View Store Details Explore KensingtonView More Apparel K & G Fashion SuperstoreLord & TaylorH & MCarter'sCatherines Sports VansG's FashionPerformance BicycleSports WorldCross Country Jewelry Lord & TaylorBloomingdale's Recommend For You Stacy Furniture Build-A Bear Workshop J. C. Penney 84 Lumber A.C. Moore Arts & Crafts Adams Golf American Standard American TV & Appliance Andersen Windows & Doors Andronico's Market