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Quick Details

  • Place of Origin: Guangdong, China (Mainland)
  • Brand Name: Toptag
  • Model Number: TM card 100, RW1990/DS1990
  • Material: Stainless steel
  • Size: diameter 16.25mm*5.89mm
  • Color: Black, red, yellow, green, blue, etc
  • Unite Weight: 0.025kg
  • Design: I button
  • Memory Capacity: 8 Kbits RAM
  • Read-write features: read, write and encrypt
  • Working Time: >20 years
  • Read Endurance: > 350 thousand times

Packaging & Delivery

Packaging Details 100pcs/bag
RW1990 Copy iButton
Delivery Time Shipped in 7-12 working days after payment
 Touch Memory Contact RW1990 Copy iButton for DS1990A TM Card

1. Overview of R/W ibutton Key Tag TM Card

Rewritable key RW1990 is designed to make copies of DALLAS DS1990A keys.
A 64-bit serial number is rewritten in the RW1990 rewritable key, thereby making it possible to create a copy of any DS1990A/TM1990A key.

The number of record cycles is not limited. The records are written by iButton copy devices(iButton duplicators).

The rewritable key weighs 4.7 grams.

A copy of other electronic keys 64-bit serial id, for example DS1991 and DS1996, can also be made on this rewritable key because keys that are same from DS1990A – in addition to having an ID number. But the additional amount of protected memory or additional features can not be copied.


2. RW1990 Key Features

Rewritable ibutton RW1990A-F5 read-write type of card;

Read and write DS1990A and TM1990A iButton, RW1990;

Stainless steel package with SU304#;

Rugged, never rust and corrosion; Resistant to heat;

Anti-variant and sealing strong;

Information ibutton RW1990 memory 64, can be repeated rubbing, write the DIY code;

Holder color: red, yellow, green, blue, black and ustomized colors are also available.

3. Application of Programmable Copy RW1990 Key
Our RW1990 programmable ibutton are widely used in security patrol, keys for cabinet locks, electronic rim locks, door intercom, card systems, identification, banking, Communications, rail transportation, transportation and so on.



4.Pictures of R/W ibutton Key Tag TM Card






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China (Mainland)
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Supplier Assessments:
45 Transactions 170,000+
The supplier’s transactions conduted via Alibaba.com in the past 6 months.
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Supplier's Trade Assurance Limit: US $45,000
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