DS1990A TM1990A-F5 ibutton key/Electronic key
Description
The TM1990A is a rugged data carrier that serves as an electronic registration number for automatic identification. Data is transferred serially through the 1-Wire® protocol, which requires only a single data lead and a ground return. Every TM1990A guaranteed unique 64-bit registration number that allows for absolute traceability. The durable stainless-steel iButton package is highly resistant to environmental hazards such as dirt, moisture, and shock. Its compact coin-shaped profile is self-aligning with mating receptacles, allowing the TM1990A to be used easily by human operators.
Key Features
1. Can Be Read in Less Than 5ms
2. Operating Range: 2.8V to 6.0V, -40°C to +85°C
Common iButton Features
1. Unique 64-Bit Registration Number Ensures Error-Free Device Selection and Absolute Traceability Because No Two Parts are Alike
2. Built-In Multidrop Controller for 1-Wire Net
3. Digital Identification by Momentary Contact
4. Data Can Be Accessed While Affixed to Object
5. Economically Communicates to Bus Master with a Single Digital Signal at 16.3kbps
6. Button Shape is Self-Aligning with Cup-Shaped Probes
7. Durable Stainless-Steel Case
8. Easily Affixed with Self-Stick Adhesive Backing, Latched by its Flange, or Locked with a Ring Pressed Onto its Rim
Applications/Uses
Access Control
Inventory Control
Tool Management
Work-in-Progress Tracking
| Item |
Ibutton key |
| Material |
ABS , Stainless Steel |
| Size |
16.25mm*5.89mm |
| Color |
Red, green, blue, yellow, black, etc |
| Working Temperature |
-40 ~ +85 degree |
| Read-Write Method |
Contact |
| Memory |
64 bits |
| ID number |
Engraved |
| Chip |
RW1990A, RW1990B, DS1990A, TM1990A-F5 |
| Application |
Intelligent Community, Postal Service, Railway St, etc. |
Audited Supplier 
){kind=link}
){kind=link}