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ibutton for guard patrol ID
1, It is plastic housing with a microchip inside containing a unique serial code which is then related to a check point2, Anti-destroyed & Waterproof, anti-corrode, fit for every environment3, Non-contact TI-ID card 4, Long lifetime: >20 years5, High sensitive and Long inductive distance 6, Wide temperature scope: -40+707, Not need power supply8, Original USA material, warranty: 5 years
ibutton for guard patrol ID