Dual Frequency RFID Key Fob 125Khz
Material: ABS
Products Name: RFID Keyfob
Model: 1
Sample: Available stock sample for free
Product Introduction
Dual-frequency design operates on both 125kHz low frequency and 13.56MHz high frequency simultaneously. Standard configuration includes Mifare Classic 1K (1KB read/write memory) and TK4100 (64-bit read-only unique ID). Ideal for businesses maintaining existing low-frequency access systems while migrating to higher-security high-frequency readers. One tag works across mixed reader environments, significantly cutting replacement expenses during phased upgrades.
Technical Specifications
| Parameter | Details |
|---|---|
| Material | ABS housing |
| Operating Frequencies | 13.56MHz + 125kHz |
| Standard Chip Set | Mifare Classic 1K + TK4100 |
| Memory Capacity | 1KB (read/write sectors) + 64-bit (read-only UID) |
| Dimensions | 44mm × 30.5mm × 5.5mm |
| Read Range | 2-5cm (depending on reader power) |
| Read Cycle Lifetime | >100,000 cycles |
| Operating Mode | Passive (no battery required) |
| Operating Temperature | -40°C to +75°C |
| Storage Temperature | -50°C to +80°C |
| Standard Colors | Black, blue, red, pink, navy blue |
Dual-Frequency Advantages for Enterprise Deployment
| Feature | This Product (Mifare Classic 1K + TK4100 Dual-Frequency) | Typical Single-Frequency 125kHz Tags | Typical Single-Frequency 13.56MHz Tags |
|---|---|---|---|
| System Compatibility | Works with both legacy LF and modern HF readers | Legacy systems only | Modern systems only |
| Migration Cost | Single tag covers mixed environments; no phased replacement needed | Full replacement required | Legacy tags become obsolete |
| Data Storage & Security | 1KB read/write + encryption support | Read-only ID only | 1KB read/write + encryption support |
| Deployment Flexibility | Supports gradual system upgrades | No upgrade path | Requires full immediate replacement |
| Read Reliability | Low-frequency section remains stable near metal | Susceptible to interference | High-frequency affected by metal/liquids |
Available RFID Chip Options
| Frequency | Interface | Chip Examples |
|---|---|---|
| Low Frequency 125kHz | - | Read-only: TK4100, EM4100 Read/write: T5577, EM4305, Hitag, etc. |
| High Frequency 13.56MHz | ISO14443A | MIFARE Classic EV1 1K, MIFARE Ultralight EV1, MIFARE DESFire EV1 2K/4K/8K, NTAG213/215/216, MIFARE Plus, Fudan F08 1K, ISSI 1K, etc. |
| High Frequency 13.56MHz | ISO15693 | ICODE SLI, TOPAZ512, etc. |
| UHF 860-960MHz | ISO18000-6C | Alien H3/H4, Monza 4/5/6, NXP UCODE, etc. |
Chip combinations can be specified per project to meet varying security and storage requirements.
Customization and Bulk Supply
- Standard colors: black, blue, red, pink, navy blue
- Options include corporate logo silk-screen printing, laser numbering, and pre-programmed UIDs
- Stock samples available immediately for compatibility testing
- Packaging: 50 pieces per bag; 1,000 pieces per carton (carton size 37×29×10cm, gross weight ~6.5kg) or 2,000 pieces per carton
FAQ
Q: What is the real-world value of dual-frequency tags during access system upgrades?
A: They let companies keep existing 125kHz readers in place while rolling out newer, more secure 13.56MHz readers. The same tags work throughout the transition, avoiding large one-time replacement costs.
Q: What factors affect read range?
A: Typically 2-5cm. Range depends on reader power output, antenna design, and environmental interference. The low-frequency section performs better near metal surfaces.
Q: Can tags be pre-programmed in bulk?
A: Yes. During manufacturing, we can write UIDs or sector data according to your provided sequences-ideal for large-scale employee issuance.
Q: How is durability ensured?
A: ABS housing with ultrasonic welding delivers over 100,000 read cycles and reliable performance across a wide temperature range suitable for most indoor and outdoor installations.
Q: What are the minimum order quantities and sample policy?
A: Stock samples are provided at no charge for testing. Bulk MOQ is flexible and adjusted based on chip selection and customization needs.
Q: Are higher protection ratings available?
A: Standard ABS offers good environmental resistance for typical access and attendance applications. For IP67 or higher, epoxy-filled versions can be specified.
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