50Pcs/Lot TM1990A-F5 TM Lock Card Ibutton Touch Memory Button with Handle For Guard Tour

TM card, also known as touch memory, electronic key

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

Type: TM1990A-F5 (Not rewritable)

Dimension: diameter 16.25MM, high 5.89MM

Function: anti-water, anti-shake, anti-rust; the shell is made by 304 stainless steel, never rust; the chip is made by new TM1990A wafer, unique 64bit serial number of the world. Full compatible with ds1990A(R).