Access Control iButton Key Fob – Dallas DS1990A-F5 Touch Memory ID Key
1. Introduction: Secure iButton TM Card for Access Control
The Dallas DS1990A-F5 iButton Key Fob is a widely used contact-based electronic identification device for access control, attendance systems, and parking management. Built with a stainless-steel shell and plastic holder, it provides durability, security, and convenience for everyday use in residential, commercial, and industrial facilities.
2. What is a TM iButton Key?
A TM (Touch Memory) iButton is a 1-Wire contact electronic key. Each device comes with a unique 64-bit factory-lasered serial number, making it impossible to duplicate. Users simply touch the metal surface to a reader, and the system instantly verifies their identity.
3. Key Features
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Unique Digital ID – Each key fob has a permanent, factory-set 64-bit code.
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Durable Stainless-Steel Housing – Resistant to impact, moisture, and dust.
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Compact & Portable – Key fob design with holder for keychains.
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Long Lifecycle – Supports 100,000+ read/write cycles.
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Wide Compatibility – Works with Dallas iButton TM readers and access systems.
4. Technical Specifications
| Parameter | Details |
|---|---|
| Model | Dallas DS1990A-F5 iButton |
| Technology | 1-Wire contact-based Touch Memory |
| Housing | Stainless steel with plastic key fob |
| ID Code | Unique 64-bit factory-lasered serial |
| Lifecycle | 100,000+ read/write operations |
| Operating Temp | -40°C to +85°C |
| Applications | Access control, attendance, parking, vending, secure ID systems |
5. Advantages
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Non-duplicable ID – enhances security.
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Strong stainless-steel housing – suitable for outdoor/industrial use.
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Compact key fob design – easy to carry.
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Cost-effective and widely adopted – compatible with many systems.
6. Applications
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Residential & Office Access – door entry and secure facilities.
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Parking Lots – vehicle access control.
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Attendance Systems – employee check-in/out.
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Vending & Payment Machines – secure authentication.
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Industrial Equipment – operator authorization.
7. Customization Options
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Fob color customization.
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Logo or serial number printing.
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Bulk supply packaging options.
8. Installation & Use
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Register the iButton ID into your access system.
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Attach the fob to a keychain for convenience.
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Touch the metal contact to the reader for instant verification.
9. FAQ
Q1: Can the DS1990A-F5 be cloned?
No, each has a permanent, unique ID code.
Q2: Is it waterproof?
Yes, the stainless-steel shell is moisture-resistant.
Q3: What readers are compatible?
Works with all Dallas iButton TM readers and 1-Wire compatible systems.
10. Conclusion
The Dallas DS1990A-F5 TM iButton Key Fob is a secure, durable, and cost-effective access solution. With its unique digital ID, stainless-steel build, and compatibility with global access control systems, it is the trusted choice for residential, commercial, and industrial security applications.
