Pimlico Key Service, Inc. can help your home and business stay secure by providing service and installation of your security needs. Our Company services government, healthcare, schools, small businesses, residential and commercial properties throughout Maryland since 1948. Business Hours: Monday - Friday: 8:00 AM - 5:00 PM Saturday: 9:00 AM - 12:00 PM Telephone: (410) 367-7400 Fax: (410) 367-7319