Double-secured locking and access control. PROTEC²CLIQ programming key CONNECT is used as credential to access the CLIQ Web Manager software. Administrator can create programming tasks in CLIQ Web Manager and the tasks are distributed to programming keys with local PD or remote programming devices (e.g. WallPD or CLIQ Connect App) in the field. Also cylinders' audit trails can be retrieved with a programming key. CLIQ Connect keys can be updated through Bluetooth with a smartphone application. ATEX approved. Patented PROTEC²(T) key system.