Everyone wants to protect their home, their property, and most of all, their families. In fact, market research suggests the home security business is growing at a rate of about 9 percent a year. But home security systems are not all alike.

Some systems can not only warn you of intruders, but can also notify authorities, monitor smoke and carbon monoxide detectors, and/or include video surveillance. Most security alarm installers can provide services that include equipment plus installation and monitoring services.

If you are thinking about buying a home security system, the Federal Trade Commission (FTC) suggests that you:

- Get references from friends, neighbors, or relatives.

- Check out companies online and check the Better Business Bureau for complaints.

- Verify that the contractor's license is in good standing via the National Association of State Contractors Licensing Agencies.

- Get written estimates from several companies.

- Read the fine print regarding costs, installation timeline, warranty, and an explanation of your right to cancel within three days of signing a contract.

- Ask lots of questions:

• Who will perform the installation and monitor the system? Some companies subcontract this work to a third party.
• What is the contract period for monitoring? One year? More? Are there penalties for early termination? What happens if you move before the contract term is up?
• How much does the monitoring cost? How often will you be billed?
• Does the company call you before notifying the police?
• How soon after the alarm sounds will you be notified?
• What happens if the alarm company can't reach you when the alarm is sounding? Is the alarm reset? Are the police called? Are alternate numbers called?
• What happens if the power goes out? Is there a back-up battery system?
• What does the warranty cover, and for how long? Is it from the manufacturer or their installer?
• Who is responsible for repairs or upgrades to the system?

- Does the company offer interactive services like smoke and fire detection, remote control, video surveillance, email notifications and special apps for smart phones?