Abstract: A remote lock assembly for vertically pivoting windows has two resilient catches mounted in the vertical stile of a window sash one above the other. Opposite the lower catch is a cam housing with a recess in which the lower catch is engaged when the window is in a locked position and containing a cam which, when rotated, rides against the catch to force the catch out of the cam housing to unlock the window. A flapper housing is mounted in the window jamb and has a recess for engaging the second catch. A flapper is pivotally mounted to the flapper housing and pivots between a locked position in which the flapper does not block the housing recess and an unlocked position in which it blocks the housing recess and forces the opposing catch out of the flapper housing recess. A link connects the cam to a bar which slidably extends into the flapper housing. The bar has a protrusion which engages the flapper, such that rotation of the cam operates to disengage both catches from the window jamb.