Welcome to the Monitoring Association About TMA The Monitoring Association (TMA) is a trade association that represents companies offering security (alarm) monitoring systems through a central station. It also represents companies that provide services and products to the industry. Login To renew memberships, place orders, or register you will be required to LOGIN. If you are a visitor and not a registered user or you are unsure, please use the New Visitor Registration to register for the site. Membership For more details on memberships or if you are interested in becoming a member please contact our membership department. Call: 703-242-4670 ext. 18 or email us: membership@tma.us Membership Information Renew Membership Products Some Items in the Store are available for members only or require login. For complete list of items: LOGIN. Publications Events Plaque Orders