This is EM4100/4102 ,is Read-only, not programable,not HID!!!!
Description:
Size:40.5*32*4.2mmMaterial: PVCDetecting distance: 3-10cmID tag suitable for: 125KHZ EM4100/4102 card reader and readingColor: Red,Green,Yellow,Grey ,Black optional
Compatible with all Door Entry systemEasy to carryWater resistantEach comes with Key ring includedNo external power required.Brand new key inductive card for entrance guard system.