Introduction:The DS1990A serial number iButton® 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 DS1990A is factory lasered with a 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 selfaligning with mating receptacles, allowing the DS1990A to be used easily by human operators. Accessories enable the DS1990A iButton to be mounted on almost any object, including containers, pallets, and bags.
Unique, factory-lasered and tested 64-bit registration number (8-bit family code + 48- bit serial number + 8-bit CRC tester) assures absolute traceability because no two parts are alike
Multidrop controller for MicroLAN
Digital identification by momentary contact
Chip-based data carrier compactly stores information
Data can be accessed while affixed to an object
Economically communicates to bus master with a single digital signal at 16.3k bits per second.
Standard 16 mm diameter and 1-Wire™ protocol ensure compatibility with iButton.
Button shape is self-aligning with cup-shaped probes.
Durable stainless steel case engraved with registration number withstands harsh environments.
Easily affixed with self-stick adhesive backing, latched by its flange, or locked with a ring pressed onto its rim
Presence detector acknowledges when reader first applies voltage.
Meets UL#913 (4th Edit.); Intrinsically Safe Apparatus, Approved under Entity Concept for use in Class 1, Division 1, Group A, B, C and D locations.
Can be read in less than 5ms
Operating Range: 2.8V to 6.0V, -40°C to 85°C
Application:Access Control,Work-In-Progress Tracking,Tool Management,Inventory Control Package: 100pcs 1990A-F5 ibutton (color in stock) Payment policy1. Payment way: Escrow.2. Please pay the money within 3 days after the auction ended. 3. We are not responsible for custom duties and related taxes.4. 24 hours technician support and online service,Closely follow up the cargos until arrived.For shipping : 1. Our shipping rates include the cost of shipping, handling, packaging and related manpower costs.2. To USA,We will use Epacket shipping,it takes about 5~15 working days to USA.All the other item will be shipped by Airmail post within 3 business days, It takes approximately 8-19 workdays (CA, AU, UK, EU). other country 15-35 workdays.3. All items will be shipped to buy\'s address in the order.if you need to ship to other address,p lease contact with us.4. We are not responsible for wrong or undeliverable address. We reserve the right to charge the shipping fee again for returned items due to wrong address.Return policy: 1. Our goal is providing our client 100% satisfaction.2. 7 Days Money Back Guarantee and Full One Year Limited Warranty from the date of original purchase.3. We accept the returns unused / untested condition with orignal packaging. Buyer has the responsibility to send it back by recorded delivery with his own expense.4. For more questions,please contact with us.Feedback:1. If you are satisfied with our service, please leave us a positive feedback with 5 scores2. We are always ready to being in touch to answer any questions or just see that all is going smoothly. Please contact us to resolve the issue before leaving negative feedback.