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Step 1
Decide how much protection you need. Do you only need an alarm that warns you of a break-in attempt, or would you like it to detect fire too? Although their primary purpose is to prevent home invasion, alarm systems can also protect your home against fire if you're not present or are sleeping.
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Step 2
Choose between an alert-only system or a monitored system. Some alarms go off when a burglar tries to break in. This gives you a chance to call the police and often scares off the would-be intruder. Some alarms have an audible alert, but they also contact a monitoring center and initiate a call to the police. If you're away from home frequently, a monitored system is your best bet. You will also need a monitored system if you want fire protection. If you are on a tight budget, you may need to opt for an alert-only system. There is only a one-time cost for an alert-only system. Monitored systems are more expensive to purchase and require a monthly fee.
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Step 3
If you opt for a monitored system, decide whether you want a silent alarm or whether you want an alarm with a loud siren. A silent alert that notifies the police and alarm company without letting the intruder know will increase the odds of his capture. However, it puts you and your family at a higher risk in the time before the police arrive. A loud siren often deters the burglar, causing him to immediately flee. While he might escape, your family has a better chance of staying safe.
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Step 4
Shop around before making your final choice. If you are purchasing an alert-only system, this will be a matter of comparing the final price. If you are purchasing a monitored system, you will need to consider both the initial alarm installation cost and the ongoing monthly fee.
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Step 5
Once your monitoring contract expires, shop around. The fee for monthly monitoring can vary greatly, so you may be able to save more money by making a switch.