RW1990-15 iButton Card RFID Electronic for Key Fit for Electronic Lock Access Sy


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brand new and high quality


This RW1990 chips we use imported one, which to be reliable performance than others, CMOS microcircuit is essentially an electronic for carrier of the unique 64-bit digital code. The code is stored in the internal nonvolatile memory. The data exchange is performed by the 1-Wire, which requires one data pin and the common pin. The microcircuit supports the function of the 1-Wire of ROM search, which makes it possible for several devices to operate on one bus. This determines the alteration conditions of the bus and the for time intervals during synchronization by the synchropulses cuts of the control device. Data readout and writing are performed by the junior significant bit forward.

TM card, also known as for touch memory, electronic ke3.5y
Stainless steel package with su304#,
rugged, never rust, corrosion; resistant to heat;
Anti-variant; sealing strong;

for security patrol, sauna door locks,electronic door locks,
door intercom, card systems, identification, banking,
Communications, transportation, transportation, and so many fields
Information ibutton RW1990 memory 64, can be repeated rubbing, write the diy code.


Dimension: φ16.25*5.89mm
Chip type: RW1990
RW1990 feature:

1.RW1990 ibutton
3.water proof
4.Rewritable ,DS1990A and TM1990A iButton
5.can be copy,RW1990

Technique Parameters:
.America for DALLAS encryption
.Breakdown Rate:1/100,000
.Serial Number:Only global 64 bit numbers
.Inductive Type: for touch
for W and encrypt
for W times:1 000 000
.Working Temperature:-40~85

.TM Dimension:φ16.25*5.89mm
.Weight: 6g/pc

Rewritable ibutton RW1990A-F5 read-write type of card, compatible ds1990a.
Rewritable,DS1990A and TM1990A iButton ,RW1990

Unique 64-bit registration Number;
Built-In Multidrop Controller for 1-Wire Net;
Digital identification by momentary Contact


1.Transition: 1cm=10mm=0.39inch
2.Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid.
3.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!

Package includes(without retail package):
10pcs RW1990 Sauna for Key

0/5 (0 Reviews)
Weight 0.055 kg
Dimensions 20 × 20 × 20 cm
Brand Name



Mainland China


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