Hours Of Operations ADT Maryland Capitol Heights ADT Hours of Operation and Locations in Capitol Heights, MD 4.7 - 140 votes 2 Locations in Capitol Heights www.adt.com ADT Hours Category: Home & Garden ADT - Capitol Heights, MD 20731 (301) 278-3092 View Store Details ADT - Capitol Heights, MD 20743 (301) 278-3092 View Store Details Explore Capitol HeightsView More Apparel TJ MaxxBig LotsH & MRainbowTalbots Sports VansModellsModell's Sporting GoodsTaf-The Athlete's FootBasic Basic 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