Rewritable Waterproof RW1990 black Ibutton Smart TM Card for Cabinet Locking


Quanlity: 10PCS

  • 10PCS
  • 100pcs
Will not ship until [19041994]
Out of stock
SKU: N/AAvailability : In StockIn StockOut of stock
Order in the next to get it between and hoursminutes

Product Description

Rewritable Waterproof RW1990 Ibutton Smart TM Card for Cabinet Locking


An iButton device is a computer chip enclosed in a 16mm thick stainless steel can. Because of this unique and durable container, up-to-date information can travel with a person or object anywhere they go. The steel iButton device can be mounted virtually anywhere because it is rugged enough to withstand harsh environments, indoors or outdoors. It is small and portable enough to attach to a key fob, ring, watch, or other personal items,and be used daily for applications such as access control to buildings and computers, asset management, and various data logging tasks.
Failure Rate 1 /100,000 times ( used properly)
Original Serial Number 64 bits
Security 64 bits encrypt passwords
Memory Capacity 8 K bits RAM
Read-Write features read, write and encrypt
Read-Write Endurance > 1.5 billion
Working Temperature -40 ºC~+85 ºC
Read Endurance > 350 thousand times
Working Time >20 years
Size φ16.25mm×5.89mm
Unit Weight 0.05kg

Waterproof Rewritable RW1990 Ibutton Smart TM Card  for  cabinet locking

The iButton product line now comprises over 20 different products with different functionality added
to the basic button. iButton devices come in the following varieties:
Address Only
Real-Time Clock
Data Loggers

10PCS, 100pcs



  1. We send out packages timely after payment , we will inform you inmmediately if there is any exceptional situation .
  2. We choose the best shipping method to your country,depends on the condition of transport.
  3. If you didn't receive the item after 45 days,please feel free to contact us.We will make all our effort to resolve the problem.
  4. Package return due to the shipping problem,we can resend or refund.
  5. We are not responsible for delays causedby the customs,Import duties,taxes or other customs charges.
  6. Estimated shipping time for different shipping methods:Singapore Post and NLPost are good for most customers as no customs duty normally (With 15-60 Days delivery time),DHL,UPS and FEDEX are fast (3-8 Days delivery time), but it may cause custom duty.EMS to worldwide: To US, UK, Australia and Canada usually takes 15-20 working days . 14-30 business days for most countries.
  7. Delivery time


  1. IF your purchase do not meet merchantable quality, fitness for purpose or match the description, We can make sure your issues are resolved .
  2. For wrongly-shipped items, Please contact us in 48 hours after delivery.We will arrange to deliver the correct items or return all your payment.
  3. For defective or faulty products,please take photos or videos and contact us in 48 hours,we would resend or refund after confirmation.
  1. We maintain high standards of excellence and strive for 100% customer satisfaction!
  2. Feedback is very important to our business,and we highly appreciated that if you can give us 5 star feedback.
  3. we request that please you contact us immediately BEFORE you give us neutral or negative feedback, so that we can satisfactorily address your concerns.
  4. Please feel free to let us know your problem,we will try our best to satisfied you!
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Rewritable Waterproof RW1990 black Ibutton Smart TM Card for Cabinet Locking