Abstract: An improved hinge assembly for use with gates, doors and the like, including respective first, second and third members, adapted to be releasably and adjustably mounted to a gate, door or the like and a jamb or the like therefor. The first member (1) has means (10, 11) associated therewith which allows for pivotal movement thereof relative to said second (2) and third members (3), thereby to allow for selective and controlled opening and/or closing of the gate, door or the like. The assembly further includes means which allows for the monitoring of the disposition of the gate, door or the like relative to the jamb or the like therefor, thereby to denote whether the gate, door of the like is open or closed. Means are also provided for selective vertical and/or horizontal adjustment of the hinge assembly.