مواد: Stainless Steel or Soft Silicone (hand catenary) چپ: American DALLAS encryption, including DS1990A-F5, fully compatible with TM1990A-F5, i1990A. Average failure: normal use 1/100,000 times Manufacturer’s serial number: only global 64bit number System logic: 64bit password protection Storage: 8k bits RAM Card read: touch type Read and write features: can read write and encrypted R/W times: > 1.5 billion times …

Chip model: TM DS1990A-F5 Specification: 16.25×17.35mm Weight: 2.2g Material: Stainless steel Operating temperature: -40℃ ~ 85 ℃

Chip model: TM DS1990A-F5 Shell material: ABS Shell size: 49×30mm Weight: 11.2 grams Environmental indicators: -30℃ ~ 80 ℃

Chip model: TM DS1990A-F5 Specification: 35× 35mm کی, customizable Material: چمڑے + stainless steel Weight: 12g Operating temperature: -40℃ ~ 85 ℃