Absolutely terrible company. ADT do not follow protocol. After multiple false alarms, they dispatch the fire dept without even calling us first, and after entering the code multiple times to get the alarm to stop sounding. The alarm goes off for no reason - we are afraid to even set it - and pay $41/month for this crap?! Customer Service is lacking - put through so many departments it's ridiculous ... when they installed it the guy told me I could cancel any time, but apparently I've signed a 3-year contract. THE SYSTEM DOESN'T WORK! BEWARE, ADT JUST WANT YOUR MONEY and aren't willing to provide you service that you pay for!