The 2005M3 SMART Pac III is an in-line power controller that is able to receive input voltages from 12-32 VAC/DC. It has a built-in bridge rectifier. The continuous duty timer reduces initial voltage by 25 percent to extend the life of the electric strike. Includes built-in resettable fuse, MOV, voltage regulation and input status LED. Supports fail secure or fail safe configured electric strikes. If using with a 1006 electric strike the input voltage must be DC. The addition of the Smart Pac to any electric strike extends the 5 year no-fault warranty to a 10 year no-fault warranty.