TM1990A-F5 Compatible DS1990A-F5 ibutton electronic key

ibutton TM card, also known as touch memory, electronic key
Stainless steel package with su304#,
rugged, never rust, corrosion; resistant to heat;
Anti-variant; sealing strong;

for security patrol, sauna door locks,electronic door locks,
door intercom, card systems, identification, banking,
Communications, rail transportation, transportation, and so many fields

                    color can choose

                        color can choose