Specifications

DS1990 For access control
1.DS1990A F3/F5 Touch-type Serial Number
2.Most of TM cards are non-encrypted
3.High quality

 

Hot offer IButton DS1990 for access control

  

 

1) Mainly used in electronic locks, card management systems.

 

2) consists of a factory-lasered,64-bit ROM that includes a unique 48-bit serial number,an 8-bit CRC,and an 8-bit Family Code(01h).

 

3) Data is transferred serially via the Smart-Wire protocol that requires only a single data lead and a ground return.

 

4) Power for reading and writing the device id derived from the data line itself with no need for an extrnal power source.

 

5) Features are as below,Please feel free tp contact with me if you are interested in it ,then i will arrange the 

 

 

product	Hot offer IButton DS1990 for access control
read speed	Less Than 5ms
Operating Voltage Range	2.8V to 6.0V
Working Temperature Range	-40¡ãC to +85¡ãC
Dimension	16.25mm*5.89mm (max)
Advantage	Water proof,heat-resistant,dust-resistant