Product name:iButton TM-01 with holder Material:Stainless Steel button+plastic Holder Size:16.25*5.89 for the ibutton Chip:TM-01, compatible with RW2000/RW2004 Protocal:1-Wire Color:Blue, red, black, yellow purple ,orange, white, or customized Type:Electronic Smart Key Fob Application:Identification, tracking and access control MOQ:100 PCS Printing:Laser printing Show More