The MC 240-S56 is a special set designed for mounting on overhead doors and industrial type gates, for example, at the floor level. It includes a magnetic reed enclosed in an MC 200-6 aluminium housing and an extra strong magnet in an MC 200-41 housing to allow contact actuation with wider gaps. The assembly installed on the floor can withstand the weight of a car. The L-shaped angle mounting bracket provided (MC L) allows easy on-door positional adjustment of the magnet which enables proper installation of the whole set.