ADT is the oldest and largest electronic home security company in the United States. They have over 130 years of experience behind them. Originally, ADT only provided simple call boxes but they have expanded to offer everything up to interactive video security.

Many Fortune 500 companies and financial institutions use ADT for their security protection. Plus, they provide services to millions of homes across the US.

There are four levels of protection offered by ADT:

1. Yard Sign

The yard sign is meant to warn potential burglars that the home is protected by ADT, hopefully making them move on.

2. Window Decals

Window decals offer another level of deterrance in case the potential intruder misses the yard signs.

3. Alarm Siren

The alarm siren will sound if the home is broken into.

4. 24 Hour Monitoring

ADT monitors the alarm system 24 hours a day and will call the local police if the alarm is tripped.

ADT's staff are highly trained and certified. In addition to dealing with break-ins and security, they're also trained to handle emergencies like flooding, fire or carbon monoxide poisoning.

There is a wide range of equipment available from ADT, depending on your needs and your budget. Something to keep in mind is that many home insurance plans offer a discount if you have a home security system, so that can offset some of the cost of the equipment.

ADT has 6 Customer Monitoring Centers around the US, all connected to one another. They are designed with multiple fail-safes to stay online through power outages and other disasters. If one center were to go down for some reason, the others would take over for it.