The GLOBALCOM GCK Core Software Yearly Maintenance Subscription from AtlasIED provides access to firmware and software updates and new feature releases. Each GCK controller running GCK software requires 1 GCK3.0M license. Don't let your controller's maintenance contract lapse, as that will prevent you from updating or modifying the firmware/software, freezing the controller as it was when it's previous maintenance contract ended. This will leave you vulnerable to new threats, and unable to keep up with the latest features that updates bring. Controllers out of maintenance coverage will not be able to be updated or modified outside of their last configuration when maintenance was active. GCK controllers requiring GCK3.0M include: IP100-CS, IP108-CS, IP116-CS, IP108-D-CS, IP116-D-CS, IP108-EDU-CS, IP116-EDU-CS, IP108-D-EDU-CS, IP116-D-EDU-CS.