The conspicuous 440 heavy duty industrial series switch assemblies incorporate a 25/8" inch diameter mushroom button and heavy duty weather resistant contacts. The large double gang mushroom assembly includes a heavy duty steel bezel around the button to guard against abuse. When utilized as an exit or REX switch, the assembly is easy to activate and stands out for persons without prior knowledge of egress operation. In addition to egress applications, the large assembly is ideal as an easy to activate emergency/panic alarm switch.