TM Touch Memory Keyfob DS1990A-F5 | Stainless Steel Access
TM Touch Memory Keyfob DS1990A-F5 | Stainless Steel Access
TM Touch Memory Keyfob — DS1990A Compatible (RW1990A-F5)
Upgrade your access control system with the TM/DS1990A-F5 Touch Memory Keyfob — a compact, rugged electronic key built for professional security and identification applications. Compatible with DS1990A readers and systems, this stainless steel iButton-style fob delivers dependable, fast touch-based authentication for door locks, security patrol systems, banking terminals, and more.
Key Features
- RW1990A-F5 Read/Write Compatible: Fully compatible with DS1990A systems; supports repeated read/write cycles up to 1,500,000,000 times
- 64-Bit Unique Serial Number: Every unit carries a globally unique 64-bit ID with 64-bit PIN protection for enhanced security
- DALLAS Encryption: Features Dallas-standard encryption with an ultra-low breakdown rate of just 1/100,000
- 8KB RAM Memory: Ample onboard storage for identification data and custom code writing
- SUS304 Stainless Steel Housing: Corrosion-resistant, rust-proof, heat-resistant, and tamper-resistant — built for demanding environments
- Wide Temperature Range: Operates reliably from -40°C to +85°C, suitable for both indoor and outdoor use
- 20+ Year Lifespan: Engineered for long-term, low-maintenance deployment
- Touch Inductive Interface: Simple, fast, no-swipe contact activation
Technical Specifications
| Model | RW1990A-F5 (DS1990A compatible) |
| Encryption | Dallas-standard encryption |
| Serial Number | Globally unique 64-bit |
| System Logic | 64-bit PIN protection |
| Memory | 8KB RAM |
| Interface Type | Touch (contact) |
| R/W Cycles | 1,500,000,000 |
| Breakdown Rate | 1 / 100,000 |
| Working Temperature | -40°C to +85°C |
| Lifespan | > 20 years |
| Dimensions | Ø16.25 × 5.89 mm |
| Housing Material | SUS304 Stainless Steel |
Application Fields
This versatile touch memory keyfob is widely used across multiple industries and settings, including:
- Security patrol management systems
- Electronic door locks & sauna locker systems
- Door intercom and access control systems
- Identification and card-based authentication
- Banking and financial terminals
- Rail transportation and communications
Made in Mainland China.
For general guidance on electronic security standards and best practices for access control systems, visit the NIST Identity & Access Management resource page.
Frequently Asked Questions
Q: Is this TM keyfob compatible with DS1990A access control readers?
A: Yes. The RW1990A-F5 keyfob is fully compatible with DS1990A-based readers and systems. It supports standard touch-contact communication protocols used in door locks, security patrol systems, and identification terminals.
Q: Can the keyfob be reprogrammed or rewritten?
A: Absolutely. This is a read/write (RW1990A-F5) type card. It supports up to 1,500,000,000 read/write cycles and allows custom code writing, making it ideal for reusable, programmable access control deployments.
Q: How durable is the stainless steel housing?
A: The keyfob is housed in SUS304 stainless steel, which is rust-proof, corrosion-resistant, heat-resistant, and sealed for rugged use. It operates across a wide temperature range (-40°C to +85°C) and is rated for a lifespan exceeding 20 years, making it suitable for both indoor and harsh outdoor environments.