10pcs TM1990A Dallas iButton TM Touch Memory Card Key Tag DS1990A F5 Read-Only for Access Control Electronic Lock
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Product name: TM card
Chip: TM1990A-F5
Dimenter: 16.25x5.89mm
Operating temperature: -40-85
Reading time: >350000 times
Read-Only
DS1990A Overview:
The DS1990A serial number TM card is a robust data carrier that can be used as an electronic registration number for automatic identification systems. The data is transmitted via the 1-Wire® protocol, requiring only one signal lead and one ground loop. Each DS1990A contains a factory-only unique 64-bit registration number that can be tracked absolutely. Rugged stainless steel TM card package with a strong environmental adaptability, can be dust, moisture, shock. This compact button shape makes it automatically aligned with the corresponding probe head for easy manual operation. A variety of accessories to the DS1990A can be flexibly installed in a variety of containers, plastic plates, bags and other objects on the surface.
TM card common:
The factory engraved with the 64-bit registered code (8-bit family code + 48-bit sequence code + 8-bit CRC check code), no two devices registered the same code, this uniqueness to ensure that each device can Is absolutely tracked
For MicroLAN multipoint controllers
Short-term contact for digital recognition
The chip-based data carrier provides a compact storage information solution
Can be installed on an object, and read the data
Through a single line with the host for data communications, transmission rate of up to 16.3kbps, affordable
Standard 16mm diameter and 1-Wire® protocol to ensure compatibility with other TM card products
The button shape makes it possible to automatically align the cup detector
Durable stainless steel case, able to withstand the harsh environment
Installation can be easily used to paste the back of the self-adhesive, fixed its flanging, or embedded in its hoop
An online check response is made when the reader is powered up for the first time