10Pcs RW1990-15 iButton Cards with for Key Hole Rewritable Electronic Keys Cards for Electronic Lock Access Control Syst

This RW1990 we use imported one, which approved to be reliable performance than others, CMOS microcircuit is essentially an electronic for carrier of the unique 64-bit digital code. The code is stored in the internal nonvolatile memory. The data exchange is performed by the protocol 1-Wire, which requires one data pin and the common pin. The microcircuit supports the function of the protocol 1-Wire of ROM search, which makes it possible for several devices to operate on one bus. This protocol determines the alteration conditions of the bus status and the for time intervals during synchronization by the synchropulses cuts of the control device. Data readout and writing are performed by the junior significant bit forward. TM also known as for touch memory, electronic ke3.5y. Stainless steel package with su304. 10Pcs RW1990-15 iButton Cards with for Key Hole Rewritable Electronic Keys Cards for Electronic Lock Access Control Syst brand new and high quality Features: This RW1990 we use imp