Electronic Key Touch Momery iButton DS1990/TM1990/RW2004
Product Description
What is an iButton?
---- An iButton is a computer chip which is enclosed in a 16mm thick durable
weather resistant stainless steel can. Because of their small size
and extreme durability, iButtons can travel virtually anywhere.
How does an iButton communicate?
The iButton is a slave device and requires a master to initiate
communication to it. A master can be a PC or a micro processor.
With the master constantly polling the iButtons, communication to
iButtons can be started by a simple touch to a 1-Wire interface
called a Blue Dot Receptor. Every iButton has a unique 64-bit
serial number, which gives it a unique 1-Wire network address.
What are iButtons being used for?
iButtons are frequently attached to key fobs, rings, watches, or
other personal items for applications such as access control to
buildings and computers. Additionally, iButtons are commonly
mounted to storage crates, trucks, and other equipment for asset
management. Furthermore, iButtons are mounted to refrigeration
units, outdoor environments, and even to animals for various data
logging tasks
Please kindly advise the type when you inquiry or order.
| Specification of iButton Key |
| Material | ABS+Stainless Steel |
| Size | diameter 16.25mm*5.89mm |
| Chip | TM1990. TM1990A-F5 -read only RW1990, RW2004 - read &write |
| Feature | Waterproof, shakeproof ,heat-resistant,dust-resistant |
| Application | Access Control
Inventory Control
Tool Management
Work-in-Progress Tracking |
| Feature | - Can Be Read in Less Than 5ms
- Operating Range: 2.8V to 6.0V, -40°C to +85°C
|
- Capacity:
| 64bits |
| read time | 350,000 times |
| Life Time | 10years |
