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

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

1.Taiwan Original binding 2.Silicon Serial Number 3.Low-cost 4.Unique identity button 5.long-term supply 1). The  iButton SMC1990 is my company R&D .2). Mainly used in electronic locks, card management systems.3). The SMC1990 consists of a factory-lasered,64-bit...

1.It is sealed with stainless steel 2.sturdy &durable 3.rust-resistant and corrosion-resistant 4.MINI DS1990A, 5.smaill size smart button SMC1990A-F4 is ds1990a compatible,which size is more smaller. It  is sealed with stainless steel,sturdy...

1.Original binding 2.Silicon Serial Number 3.Low-cost 4.Unique identity button 5.DS1990 compatible 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...

1.Original binding 2.Silicon Serial Number 3.Low-cost 4.Unique identity button 5.Small size 1.Smart button SMC1990-F4 is sealed with stainless steel and metal shell,sturdy&durable,rust-resistant and corrosion-resistant.2.The SMC1990-F4 enhanced Silicon Serial...

1.Original binding 2.Silicon Serial Number 3.Low-cost 4.Unique identity button 5.stainless steel material 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...