DS1990 Hotel Door Lock TM iButton RW2000 RW1990 TM Card tm01

DS1990 Hotel Door Lock TM iButton, RW2000 RW1990 TM Card tm01

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TM card is similar to a button battery in shape and can be inlaid into a card,

key button and other objects.

You can replace the data line, address line, control line and power line with a

single line so that TM card achieves single line communication through a multi -function device.

According to whether the Memory in TM card is encrypted or not, TM card can be divided into encrypted TM card and non-encrypted TM card. Most of TM cards are non-encrypted.