TM card watch / TM card handles
The TM card also called iButton (information button), was the abbreviation of Touch memory, some also called the iB card, was one metal shell seal smart card, was called in the world the most solid smart card.
Material: environmental protection silicone.
Chip: American DALLAS encryption, including DS1990A - F5, fully compatible with TM1990A - F5, i1990A.
The average failure: normal use 1/100,000 time
Manufacturer's serial number: the only 64bit number
The system logic: a 64bit password protection
Storage: 8k bits RAM
The card read: touch type
Reading and writing features: can be read write can be encrypted
Number of read and write: more than 1.5 billion times
Working temperature: -40 ℃~+85 ℃
Read: number > 350,000 times
Service life: > 20 years
TM card chip installation dimensions: phi 16.25 mm x 5.89 mm
Chip weight: 2.5g.
Main characteristics: it is a kind of encapsulated in su304-0.3 stainless steel shell of smart CARDS, strong and durable, corrosion resistant; Ultrasonic welding, waterproof performance Good. Within the semiconductor wafer with lithography 64 ROM code, each product only, no repeat. Surface laser carving serial number, and the product Logo. Support all single bus mechanism, which can realize multiple CARDS to read.
Lock principle: when I opened the door, lock the electric control system of TM card verification saved 64 passwords and password are the same. The same is to open the door , don't do different reaction. Will issue an alert if a certain number of consecutive attempts numeric string .
Areas of application: Intelligent apartment building, postal, railway, fire,electricity, cable television, chemical industry, oil field and other inspection system, hotels,swimming pool, school dormitory meters and water meter, TM lock, TM Water meter , TM power meter,TM gas meter, biological recognition and tracking system, logistic system, identification system, electronic purse, etc.