If you checkout through ADT and apply this coupon code below, then you will receive 20% off of Equipment and installation of any ADT security system. If you were currently in the market for a security system, I would recommend that you go with the all wireless system that uses wireless sensors and a cell phone type system to contact the monitoring center. Those are safer systems and with this coupon, you can save some of the cost that it would typically run.
That was the code above. If it does not work, I have found that you can also negotiate with ADT to get a lower rate as well. The monthly fee is where they make the money at and it is possible to get that lowered.