Alarm companies charge a monthly fee in addition to the installation fee. The monthly fee is based on the options you have chosen and the length of your contract.
Monitoring companies receive an intruder signal when the system is tripped and the control panel sends relevant information to the central monitoring station over standard phone lines. You are then contacted by the station within 10 seconds, either by telephone or over the intercom system. The station asks you to verify yourself using your name and pass code. If you cannot provide the pass code, the monitoring station sends the police.
When you sign up with a monitoring station, you provide information on the primary, secondary, and tertiary contacts to be notified if you are not at home. Smaller alarm companies often contract with third-party monitoring stations. Typically, this arrangement costs you less but is riskier because smaller alarm companies do not have to adhere to the same standards as the large ones.
Large home security monitoring companies usually have in-house central stations that simultaneously watch over thousands of homes and businesses. These services cost more because they are verified by the independent non-profit Underwriters Laboratories (UL), which tests their products and services for maximum safety and reliability. Larger, internally managed stations must also contact authorities within 45 seconds and have a reliable back-up system of 10 to 15 days in case of a power outage.
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