SmartThings ADT Home Security Starter Kit
SmartThings’ ADT Home Security Starter Kit comes with a 7-inch SmartThings panel, two door/window sensors and one motion detector. The kit costs $550, one of the most expensive DIY systems available.
Spend an additional $200 for the expansion kit, which includes a smoke detector, a carbon monoxide detector and a water leak sensor. The SmartThings system offers month-to-month ADT professional monitoring starting at $15 per month.