dural quality electronic DS1990A ibutton key for locks(TM1990A)


dural quality electronic DS1990A ibutton key for locks(TM1990A)



1.made of stainless steel 304#,could be read under water. 
2.could be read in less than 5 seconds. 

3.quality assurance. 

The iButton serial number (DS1990A) is a rugged data carrier that serves as an electronic registration number for automatic identification. Data is transferred serially through the 1-Wire protocol, which requires only a single data lead and a ground return. Every DS1990A is factory lasered with a guaranteed unique 64-bit registration number that allows for absolute traceability. The durable stainless-steel iButton package is highly resistant to environmental hazards such as dirt, moisture, and shock. Its compact coin-shaped profile is self-aligning with mating receptacles, allowing the DS1990A to be used easily by human operators. Accessories enable the DS1990A to be mounted on almost any object, including containers, pallets, and bags.


Product Description

Product Name:  dural quality electronic DS1990A ibutton key for locks(TM1990A)

Product Model: TM1990A

Product Group: smart card--ibutton card


Ibutton Card Applications/Uses

  • Access Control System
  • Inventory Control
  • Tool Management
  • Work-in-Progress Tracking 
Our Ibutton Card Features:
  • sealed with stainless steel with key
  • rust-resistant and corrosion-resistant
  • Can Be Read in Less Than 5ms
  • Operating Range: 2.8V to 6.0V, -40°C to +85°C 
 Commom Ibutton Card Features:
  • Unique Factory-Lasered 64-Bit Registration Number Ensures Error-Free Device Selection and Absolute Traceability Because No Two Parts are Alike
  • Built-In Multidrop Controller for 1-Wire Net
  • Digital Identification by Momentary Contact
  • Data Can Be Accessed While Affixed to Object
  • Economically Communicates to Bus Master with a Single Digital Signal at 16.3kbps
  • Button Shape is Self-Aligning with Cup-Shaped Probes
  • Durable Stainless-Steel Case Engraved with Registration Number Withstands Harsh Environments
  • Easily Affixed with Self-Stick Adhesive Backing, Latched by its Flange, or Locked with a Ring Pressed Onto its Rim


Packaging & Shipping

Packing Details:



Delivery Day:

1-5 working days.

1000-3000pcs we could delivery within 1 day.


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