... with silkscreen 2 .EM4100,EM4120, ,TK4100,etc Waterproof Proximity Keyfob for Access:Widely used as access control management and electronic purse ... printed on the tag Material : ABS Temperature -10- 50 centi-degree Packaging 100pcs/box, 2000pcs/carton,14kg/carton IC Available at ... S50,Mifare1 S70,Ultralight,Mifare Desfire, etc. Waterproof Key fobs for Access Control System RFID card