low cost rewritable ds1990 dallas ibutton key RW1990

详情

The TM***0A Serial Number iButton is a rugged data carrier that serves as an electronic registration number for automatic identification. Data is transferred serially through the *-Wire protocol, which requires only a single data lead and a ground return.Every TM***0A is factory lasered with a guaranteed unique **-bit registration number that allows for absolute traceability. The durable stainless-steel iButton package is highly resistant to environmentalhazards such as dirt, moisture, and shock. Its compact coin-shaped profile is self-aligning with mating receptacles, allowing the TM***0A to be used easily by human operators. Accessories permit the TM***0A iButton to be mounted on almost any object, including containers, pallets, and bags.

Applications
1.Access Control
2.Work-In-Progress Tracking
3.Tool Management
4.Inventory Control.

Specification

TM***0A-F5 read-only type of card,  **1 or **4 steel with nylon holder compatible ds***0a. 

TM card, also known as touch memory, electronic key
TM***0A-F5 read-only type of card, compatible ds***0a. 
Stainless steel package with su**4#,
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, rail transportation, transportation, and so many fields