Hours Of Operations ADT Maryland Preston ADT Hours of Operation and Locations in Preston, MD 4.7 - 140 votes 1 Locations in Preston www.adt.com ADT Hours Category: Home & Garden ADT - Preston, MD 21655 (410) 673-0054 View Store Details Explore PrestonView More Apparel Talbots 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