Smart iButton Dallas Key RW1990
Material:ABS + 304 Stainless Steel
Dimensions:Ø16.25mm × 5.89mm
Color:Blue,Red,Yellow
Application:Access Control
Product name：Dallas Ibutton Rw1990
Programmable Smart iButton Dallas Key RW1990 for B2B Access Control Solutions
The Smart iButton Dallas Key RW1990 is a professional-grade rewritable touch memory key designed for enterprise access control, guard tour patrol systems, and security management applications. Unlike standard read-only TM1990A-F5 iButtons, our RW1990 chip enables unlimited programming and cloning capabilities, making it the ideal choice for property management companies, security service providers, and OEM manufacturers.
Each RW1990 smart key features a unique 64-bit registration number that can be rewritten and reprogrammed using standard iButton duplicator devices. This revolutionary capability allows businesses to easily replace lost keys, duplicate master keys for staff, and maintain flexible access control management without purchasing new hardware. The smart Dallas protocol ensures universal compatibility with all 1-Wire interface systems, door intercom systems, and Dallas/Maxim access control readers.
Manufactured in our ISO9001-certified facility with over 15 years of RFID expertise, our programmable iButton RW1990 delivers enterprise-grade reliability with 350,000+ read cycles and a 10+ year operational lifespan. The military-grade 304 stainless steel housing provides exceptional resistance to physical impact, extreme temperatures (-40°C to +85°C), and environmental corrosion-perfect for demanding indoor and outdoor deployments.
Technical Specifications
Detailed parameters for the Smart iButton Dallas Key RW1990 programmable touch memory key
| Parameter | Specification |
|---|---|
| Product Name | Smart iButton Dallas Key RW1990 |
| Chip Model | RW1990 (Rewritable Touch Memory) |
| Function | Read and Write (Clone DS1990A/TM1990A keys) |
| Memory Capacity | 64-bit Serial Number (4 billion combinations) |
| Protocol | 1-Wire Interface (Dallas/Maxim Compatible) |
| Material | ABS Plastic Handle + 304 Stainless Steel Can |
| iButton Dimensions | Diameter 16.25mm × Height 5.89mm |
| Handle Dimensions | L40mm × W15mm (customizable) |
| Weight | iButton: 3.3g | With Handle: 4.7g |
| Operating Voltage | 2.8V to 6.0V |
| Operating Temperature | -40°C to +85°C |
| Data Read Time | < 5ms per transaction |
| Read Cycles | 350,000+ times guaranteed |
| Data Retention | 10+ years |
| Color Options | Blue, Red, Yellow, Black, Green, Pink, White (Custom available) |
| Customization | Laser engraving (Logo, number, text), UID programming |
| Package | 100pcs/box, 5000pcs/carton, 25kg/carton |
| Applications | Access Control, Guard Tour Patrol, Security Systems, Door Intercom, Sauna Locks, Cabinet Locks, Inventory Tracking |
Why Choose SynTek Smart iButton RW1990?
Discover the competitive advantages that make our rewritable Dallas keys the preferred choice for B2B buyers worldwide
Unlimited Rewrite + Clone Capability
Unlike read-only TM1990A-F5 keys, our RW1990 smart iButton allows unlimited reprogramming. Clone existing DS1990A keys, create backup master keys, and reassign access credentials without purchasing new hardware. Perfect for property managers handling frequent tenant turnover or security companies managing multiple client sites.
In-House OEM & Custom Encoding
Full customization capabilities including: custom ICAR number encoding, private label packaging with your brand, custom handle colors, multilingual instruction cards, and laser engraving of logos or serial numbers. MOQ from 500pcs for custom orders-your brand, manufactured to your specifications.
100% Pre-Shipment Testing
Every single RW1990 iButton undergoes rigorous quality inspection including read range verification, data integrity testing, and physical inspection. Defect rate maintained below 0.1% with batch test reports and certificates of conformity included with every shipment for complete peace of mind.
Real-World Applications
Versatile rewritable iButton solutions for diverse B2B security and identification needs
Building Access Control
Guard Tour Patrol System
Door Intercom System
Sauna & Locker Locks
Hotel Electronic Locks
Asset & Inventory Tracking
Our Certifications
Quality assurance backed by internationally recognized standards and certifications
Frequently Asked Questions
Common questions about our Smart iButton Dallas Key RW1990 programmable touch memory keys
Q: What is the difference between RW1990 and TM1990A-F5 iButtons?
A: The key difference is read/write capability. TM1990A-F5 (and DS1990A) are read-only iButtons with factory-assigned 64-bit serial numbers that cannot be changed. RW1990 is a rewritable smart iButton that allows you to program and reprogram the 64-bit ID unlimited times. This means RW1990 can clone existing Dallas keys, create backup keys, and be reassigned to different users-providing significantly more flexibility for access control management.
Q: Is the RW1990 compatible with all Dallas/iButton readers?
A: Yes, the RW1990 uses the standard 1-Wire protocol and is fully compatible with all Dallas/Maxim iButton readers, door intercom systems, guard tour patrol wands, and access control systems designed for DS1990A or TM1990A-F5 keys. Once programmed, the RW1990 behaves identically to the original key it was cloned from.
Q: How do I program or clone an RW1990 iButton?
A: RW1990 keys are programmed using an iButton duplicator/copier device (available separately from our product catalog). The process is simple: 1) Place the original DS1990A/TM1990A key on the copier to read its ID; 2) Replace with a blank RW1990; 3) Press the copy/write button to transfer the ID. The entire process takes less than 5 seconds and can be repeated unlimited times.
Q: What is the minimum order quantity (MOQ) for wholesale orders?
A: For standard RW1990 iButtons with colored handles, our MOQ is 100pcs for sample orders and 1000pcs for wholesale pricing. For custom OEM orders (custom colors, logo engraving, private label packaging), the MOQ is 500pcs. We also offer free samples for qualified B2B buyers-just contact our sales team.
Q: How long does the RW1990 iButton last?
A: The RW1990 is designed for 10+ years of operational life under normal use conditions. The 304 stainless steel housing is wear-tested for 350,000+ read cycles and is resistant to impact, extreme temperatures (-40°C to +85°C), magnetic/static fields, and industrial atmospheres. Data retention is guaranteed for the lifetime of the device.
Q: Can I get custom engraving on the RW1990 iButtons?
A: Yes, we offer laser engraving services for custom text, serial numbers, or logos on both the stainless steel iButton surface and the plastic handle. Standard engravings include "SOA" or "TMC", but we can engrave any custom marking per your requirements. Custom engraving is available for orders of 500pcs or more.
Q: What applications are RW1990 iButtons used for?
A: RW1990 programmable iButtons are widely used in: Access Control Systems (residential buildings, offices, factories), Guard Tour Patrol Systems (security checkpoint verification), Door Intercom Systems, Sauna & Locker Locks, Hotel Door Locks, Cabinet & Electronic Locks, Inventory & Asset Tracking, and Time & Attendance Systems. The rewritable capability makes them especially valuable for applications with frequent user changes.
Q: Do you provide free samples?
A: Yes, we provide free samples for qualified B2B customers including distributors, system integrators, and project contractors. Sample shipping costs are typically covered by the buyer. Contact our sales team with your company information and intended application to request samples.
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