The H2D printer is designed with built-in safety features to ensure compliance with safety regulations.The Safety Key is installed in the Safety Key Socket which prevents the printer from being powered on unless the safety key is inserted. Compatibility H2D Laser H2S Laser Installation Learn more about the H2 Safety Key on Bambu Lab Wiki. Includes 3x H2 Safety Key Browse more Browse all Bambu Lab H2D Browse all Bambu Lab A1 Mini Printer spare parts & Accessories Browse all Bambu Lab AMS Lite Browse all Bambu Lab A1 Mini 3D Printer, Spare Parts & Accessories Browse all Bambu Lab Filament Browse all Bambu Lab X1 3D Printer, Spare Parts & Accessories Browse all Bambu Lab P1P/P1PS 3D Printer, Spare Parts & Accessories Browse all Bambu AMS Spare Parts & Accessories Browse all Bambu Labs Browse all Printer Spare Parts