10pcs NC NO Signal output Options Security Alarm accessories Push Panic Button Fire alarm Emergency Press Switch

Automation 16019-6A Lock ON/OFF Switch Emergency Door Release Key Switch

Newest Design Key Selector for Central Motor Roller Shutter

NC NO Signal output Options Security Alarm accessories Push Panic Button Fire alarm Emergency Press Switch

High Quality Factory Professional Design Key Switch 16018-2A for Roller Shutter/Roller Door Opener