TM1990 DS1990 iButton Touch Memory Key RFID Copy Card – 5pcs
TM1990 DS1990 iButton Touch Memory Key RFID Copy Card – 5pcs
TM1990 / DS1990 iButton Touch Memory Key – Readable RFID Copy Card
Upgrade your access control setup with the TM1990A-F5 iButton Touch Memory Key. Compatible with DS1990 and Dallas 1-Wire systems, this compact stainless steel key fob is engineered for reliable, contactless identification across a wide range of electronic lock and security applications.
Key Features
- Durable 304 Stainless Steel Shell – Corrosion-resistant and rust-proof housing built to endure daily use
- High-Temperature Resistant Resin Seal – Anti-aging resin core with excellent sealing performance for longevity
- Internal Spring Support – Stainless steel spring piece prevents deformation and maintains consistent contact
- 100% Watertight Construction – Tested for high and low temperature resilience, vibration stability, and electrical reliability
- Gold-Plated COB Technology Core – Smooth, flat surface with highly integrated internal chip panel for accurate reads
- New 2401 Chip Package – TM1990A-F5 features a 64-bit unique serial number and family code 01; usable worldwide without restrictions
- No External Power Required – Draws power directly from the reader/collector — no battery needed
- Compact Size – Measures 16.25 × 5.89 mm for easy carrying on a keyring
Common Applications
- Electronic door locks & access control systems
- Security patrol check-in points
- Sauna & cabinet door locks
- Intercom & building entry systems
- Replacement or backup key for existing iButton/TM card readers
Specifications
| Model | TM1990A-F5 (DS1990 Compatible) |
| Chip | 2401, 64-bit unique serial number, Family Code 01 |
| Shell Material | 304 Stainless Steel |
| Dimensions | 16.25 × 5.89 mm |
| Power Supply | Powered by reader (no battery required) |
| Waterproof | Yes – 100% watertight |
| Interface | 1-Wire / Touch Memory (Dallas protocol) |
For more information on electronic security standards and best practices, visit the NIST Cybersecurity resources.
Frequently Asked Questions
Q: What is the TM1990 DS1990 iButton Touch Memory Key used for?
A: The TM1990 / DS1990 iButton Touch Memory Key is a compact RFID copy card used in access control and security systems including electronic door locks, security patrol check-in stations, sauna and cabinet locks, and intercom entry systems. It communicates via the Dallas 1-Wire protocol and is compatible with most TM card and iButton readers worldwide.
Q: Does this iButton key need a battery?
A: No — the TM1990A-F5 iButton requires no external power or battery. It draws the small amount of power it needs directly from the collector/reader when touched to the contact point, making it completely maintenance-free.
Q: Is the TM1990 iButton waterproof and durable?
A: Yes. The key features a 304 stainless steel shell with high-temperature resistant resin sealing, making it 100% watertight. It has also been tested for vibration resistance, electrical reliability, and extreme temperature performance — ensuring it holds up through years of daily use.
Q: How is the TM1990 different from a standard RFID card?
A: Unlike flat plastic RFID cards, the TM1990 iButton uses a Dallas 1-Wire touch-contact interface housed in a rugged stainless steel disc. It carries a globally unique 64-bit serial number (family code 01) that cannot be duplicated by standard RFID devices, offering a distinct and reliable identification method for compatible access control systems.