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“door alarms” also known as “door sensors” for residents of Dallas Texas. Because of the fact that over 80% of break-ins happen through a doorway, the door sensor is arguably the most important device included in any security systems. Some door or window sensors are hard-wired to an electric circuit within the property. The system is activated when a door or window is opened – causing a break in the flow of voltage to the circuit – then causing the alarm to activate. Other door or window sensors transmit a signal wirelessly to the panel which in turn activates the alarm. The Smith & Wesson Dallas Texas Central Station Monitoring center and Dallas police are quickly notified once this occurs. The Smith & Wesson Security systems of Dallas can handle either type of door or window sensor, and are actually capable of alerting the monitoring station of precisely which door or window in particular was breached.