Simply put, local alarms merely have sirens or flashing lights to let you know that an emergency is taking place. A local alarm does not notify an alarm company or any authorities when it is triggered. You need to call emergency responders yourself if an alarm is triggered, which can be a problem if you are not at the property.
Monitored alarms, like those offered by Vector Security, are connected to a monitoring center where operators are staffed around the clock. If a monitored alarm is triggered, a signal is sent to the monitoring center where operators can dispatch help to your property, whether you are there or not.
Read detailed information about home alarm monitoring procedures at Vector Security.