Hours Of Operations TSR Alarm Maryland Potomac 20854 TSR Alarm Hours of Operation and Location in Potomac, MD 20854 4.4 - 64 votes 1151 Seven Locks Rd, #D, Potomac, MD 20854 (301) 424-2435 Get Directions TSR Alarm Hours Category: Electronics Hours Hours may vary due to season or holiday reasons. For specific hours, please contact store directly. Map Explore PotomacView More Apparel Chico'sCoachExpressOccasionsBachrach Sports Capital StoresTeam USAI9 SportsSport Center Jewelry Chico'sOccasions Recommend For You A & P Food Store Arc Capital Stores Carpet Cleaning USA Development LLC I9 Sports Resources Incorporated Sport Center Team USA USA Carpet