Homeowner insurance covers most events such as fires, tornadoes and hurricanes. Flood insurance is generally not included and must be purchased separately since floods are a more common occurrence. The cost of homeowners insurance is generally not taken into consideration by first time homeowners when buying their home, but a significant discount is generally given to homeowners with home security systems installed. The total discount given as a result of homes having security systems differs based upon the features of the system for instance, a system monitored by a central monitoring station should provide a larger discount compared to one that is not monitored and the amount of coverage purchased initially and the company offering the insurance. In general, homeowners receive a 10 20% discount on their insurance by having a functioning home alarm system installed. This type of system allows the home alarm to be remotely armed or disarmed, cameras to be monitored, household lights to be turned off and on, air conditioning or heating to be turned on or changed, and motion detectors to be monitored.