The FE535 is a VdS approved magnetic door holder with a steel, square base. The 500 series door holding magnets are the result of years of specialised development. With low power consumption the manets are still abel to bruduce very high holding forces. All magnets have a spring-loaded pin to ensure ejection against remnant magnetism.This square steel base model offers a cost effective solution without sacrificing performance. The FE535 is supplied without keeper plate. This may be ordered separately depending on the application.For practical ease of installation, all units are complete with electrical termination. Protection diodes prevent electromagnetic pulses, and reverse polarity protection speeds up installation. The boxes are predrilled in a practical, standard format for rapid mounting. All models are VdS approved. (Refer to the specific device specifications)