1.Original binding 2.Silicon Serial Number 3.Low-cost 4.Unique identity button 5.SMC LOGO Original factory

 The SMC1990A1-F5 enhanced Silicon Serial Number is a low-cost, electronic registration number that provides an absolutely unique identity which can be detemined with a minimal electronic interface (typically,a single port pin of a microcontroller).The SMC1990 consists of a factory-lasered,64-bit ROM that includes a unique 48-bit serial number,an 8-bit CRC,and an 8-bit Family Code(01h). Data is transferred serially via the Smart-Wire protocol that requires only a single data lead and a ground return.Power for reading and writing the device id derived from the data line itself with no need for an extrnal power source.

 

          (The detail of our logo on the button)

                       (Colourful handle  bar for your choose)

  

   

  

         SMC1990-F4                                                                SMC1990-F5

         (Different size for you choose)

 

We are original company to produce it ,Our mother company is in Taiwan.

We can promise our products quality.

Welcome to contact with me,free samples can provide!

Small size DS1990 compatible Ibutton TM card