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Waterproof ID Writable Blank iButton RW1990 TM Card IB Card 1990B RW1990 IButton Smart Card locks key
Specification :
| Part No: | TM |
| Product Name: | TM KeyIbutton Keyfob |
| Material: | ABS + Durable Stainless steel |
| Size L/W: | 55 x 20mm |
| Color options: | Black/ blue/ Red/ Green/ Yellow etc |
| Housing: | Stainless steel |
| Weight : | 5g |
| Temperature : | -20~ +70℃ |
| MOQ : | 100pcs |
| Package : | 100pcs per bag |
| Notes: | with laser logo |
IC Parameters :
| IC names | RW1990 |
| Memory | 64bits |
| Read/Write: | Read an Write |
| Protocol: | i-Wire Protocol |
Featrues of Rewritable RW1990 TM card
| Leather Material Electric iButton Key Tag with TM01 | |
| Material | Stainless steel |
| Original Serial Number | 64 bits |
| Security | 64 bits encrypt passwords |
| Memory Capacity | 8 Kbits RAM |
| Read-Write features | read, write and encrypt |
| Read-Write Endurance | > 1.5 billion |
| Working Temperature | -40 ºC~+85 ºC |
| Working Time | >20 years |
| Size | φ16.25mm×5.89mm |
| Color | Red, Green, Yellow, Black, etc |
| Read Endurance | > 350 thousand times |
| Unit Weight | 0.025kg |
| Failure Rate | 1 /100,000 times ( used properly) |





