” Look for suppliers that carry multiple brands and models so you don’t get locked into home security equipment that’s not right for you. In addition to good selection, look for a supplier that offers free system programming and technical support. Make sure the supplier doesn’t require a high cost, long term monitoring contract. Before you place an order, call the supplier and discuss your plan. The staff will help you develop a materials list and program the alarm panel appropriately. Ask to have the components labeled for each zone. Your DIY security system doesn’t have to be connected to a monitoring service that calls the police. It can simply trigger an alarm siren. But don’t dismiss the importance of alarm monitoring. Crime statistics show that burglars aren’t scared away by sirens. They know it will take at least three to five minutes for neighbors to call the police and just as long for police to respond to the call.