How much does ADT cost? ADT offers three home security system packages, which can be self-setup or professionally installed. The company often runs promotions, discounting self-setup packages with ...

ADT, the longest-standing home security company in the ... on the higher end for a DIY security system. For comparison, SimpliSafe professional monitoring costs $17.99 to $27.99 per month.

ADTADT has been providing home security for more than 150 years, long enough to become one of the biggest names in the ...