Looking for child safety limiter for aluminum casement window

In 2008, I installed a Milgard Single Casement series 920 aluminum casement window with an egress hinge. It's in a room that is now a baby nursery and I need to add a child safety catch of some type. The hinge in the window is a made by AmesburyTruth and I see they make a window limiter product called SafeGard. I am trying to figure out if that device will fit on this window. Their SafeGard 2R requires a minimum gap of 7/16" and the SafeGard 2C required a minimum gap of 5/8". The 2C is not "self locating" but I don't know what that means. Can you help me identify if the SafeGard will fit on this window? Do you sell it and/or are there other models that would fit this window that you would recommend? Thanks