SHIELD® Security Systems specializes in the sale, installation and monitoring of burglar alarms, fire alarms and other electronic security. To stop a thief, it helps to think like a thief...only smarter. SHIELD Security Systems does. We are pros with years of experience in designing security systems that deter and detect a host of emergency situations. Apply your entrepreneurial skills to develop wealth and a secure future with recurring revenue from long-term customers in a recession-proof industry.