12VDC F/L. The Adams Rite 7101 is an electric strike designed for use in aluminum, hollow metal, or wood doors fitted with an Adams Rite 4500, 4700, or 4900 deadlatch or cylindrical lockset with 1/2" [12.7 mm] to 5/8" [15.9 mm] latchbolt projection. Electrical actuation unlocks the keeper, releasing the latchbolt so the door may be opened without operating the latch itself.. Radius faceplate - to suit double leaf aluminium doors. 12V DC/24V DC are continuously rated. DC releases are reversible fail locked or fail unlocked. Short faceplate to suit aluminium frame