LF RFID Card | 125 kHz Proximity Card
Reliable 125 kHz LF Cards for Access Control, Attendance & Parking
Low frequency RFID cards operating at 125 kHz (134.2 kHz optional), available with EM4100, TK4100, T5577, HITAG and other chip platforms. Compatible with most LF proximity readers and legacy systems. CR80 card format with PVC, PET or ABS material options, full custom printing and OEM/ODM support.
- 📡125 kHz
Low Frequency - 🛡️Stable &
Reliable - ⚙️Broad Chip
Compatibility - 🖨️Customizable
& Durable
What Are LF RFID Cards?
LF RFID cards are low frequency proximity cards operating mainly at 125 kHz — and optionally at 134.2 kHz depending on the selected chip. Widely used as 125 kHz proximity cards for access control, time attendance, parking management, membership and identification systems, LF RFID cards offer stable reading performance at 2–10 cm, easy integration with legacy readers, and flexible chip choices to meet different project requirements. Common chip platforms include EM4100 card, TK4100 card, HID compatible card, T5577 card and HITAG card. CedaGlo supports OEM and ODM programs with full custom printing for access control cards, employee cards, and parking card programs. Learn more about our LF RFID card range.
Common Challenges in LF Card Projects
Stable and reliable reading in daily access control environments
Compatibility with existing LF RFID readers and legacy systems
Flexible chip selection for ID-only, rewritable, or higher-security applications
Durable card body for long-term daily use in demanding environments
Custom printing and personalization for branding and user identification
OEM/ODM support for access control, employee card, and parking card programs
Why Choose CedaGlo LF RFID Cards
EM4100, EM4200, TK4100, T5577, ATA5577, HITAG 1/2/S, EM4305 and HID-compatible options for different LF RFID projects.
Consistent and reliable proximity identification at 2–10 cm, compatible with most installed LF reader infrastructure.
Read-only or rewritable memory depending on selected chip — UID-only up to approx. 2 Kbit typical for T5577 and HITAG variants.
Silk screen, offset printing, UID/sequential number, barcode, QR code, magnetic stripe optional. OEM/ODM programs supported.
Technical Highlights
Low frequency RFID operation at 125 kHz; 134.2 kHz optional for selected chips
Chip platforms: EM4100 / EM4200 / TK4100 / T5577 / ATA5577 / HITAG 1 / HITAG 2 / HITAG S / EM4305 or equivalent
Read-only, rewritable, and selected password-protected options available depending on chip
Fast and stable identification for low frequency access control card systems
Good compatibility with many LF proximity readers and legacy infrastructure
CR80 card format with optional PVC / PET / ABS materials
Key Features
- 125 kHz standard; 134.2 kHz optional on select chips
- EM4100, TK4100, T5577, HITAG 1/2/S, EM4305 platforms
- HID-compatible chip options available
- UID-only or rewritable memory depending on chip type
- CR80 standard format: 85.6 × 54 mm
- 0.76 mm standard thickness; customizable
- PVC / PET / ABS material options
- Glossy, matte or frosted finish available
- Silk screen / offset printing, full-color artwork
- UID number, inkjet number, sequential barcode
- QR code printing supported
- Magnetic stripe (LoCo / HiCo) optional add-on
Technical Specifications
| LF RFID Card — Technical Specifications | |
|---|---|
| Card Type | LF RFID Card / 125 kHz Proximity Card |
| Frequency | 125 kHz typical; 134.2 kHz optional depending on chip |
| Common Applications | Access control, time attendance, parking management, membership, identification |
| Chip Options | EM4100, EM4200, TK4100, T5577 / ATA5577, HITAG 1 / HITAG 2 / HITAG S, EM4305, HID-compatible options, or equivalent |
| Memory Capacity | UID only / 64-bit / 128-bit / 256-bit / up to approx. 2 Kbit typical, varies by selected chip |
| Interface / Protocol | LF proximity RFID; chip-dependent modulation and protocol |
| Read / Write Type | Read-only or rewritable depending on selected chip |
| Write Endurance | Up to 100,000 cycles typical for rewritable chips; chip-dependent |
| Data Retention | Typically 10 years or longer; varies by chip |
| Reading Distance | Typically 2–10 cm, depending on reader, antenna, and environment |
| Security Type | Unique ID / password protection / basic encryption depending on chip type |
| Operating Temperature | Typically -25°C to +70°C; varies by chip and material |
| Card Size | CR80, 85.6 × 54 mm |
| Thickness | 0.76 mm standard; customizable |
| Material | PVC / PET / ABS optional |
| Finish | Glossy / Matte / Frosted |
| Personalization | Silk screen / offset printing, UID number, inkjet number, barcode, QR code, magnetic stripe optional |
Volume Pricing
| Quantity | Unit Price (USD / pc) |
|---|---|
| 100 – 199 pcs | From US$0.30 |
| 200 – 299 pcs | From US$0.28 |
| 300+ pcs | Contact Sales |
Final unit price depends on chip selection, card material, printing configuration, and order quantity. Minimum order 100 pcs. Contact our sales team for project-specific pricing.
Supported Chip Platforms
Other LF chip platforms available on request. Contact our team to confirm compatibility with your existing reader infrastructure.
LF Chip Selection Guide
| Chip | Brand | Memory | R/W | Read Range | Security | Best For |
|---|---|---|---|---|---|---|
| EM4100 / TK4100 | EM Micro / Fudan | 64-bit ROM | Read-Only | ~3–10 cm | Fixed UID, no encryption | Access control, attendance, membership (cost-driven) |
| EM4200 | EM Micro | 64–128-bit ROM | Read-Only | ~5–12 cm | EM4100 successor, longer range | Access control, asset ID |
| EM4205 / EM4305 | EM Micro | 512-bit EEPROM | Read/Write | ~3–8 cm | EM-family emulation, ISO 11784/85 (FDX-B) | R/W access tags, animal ID / livestock applications |
| EM4450 / EM4550 | EM Micro | 1 kbit EEPROM | Read/Write | ~3–8 cm | Password protection, data carrier | Access control, data-carrying tags, industrial |
| EM4569 | EM Micro | 1 kbit EEPROM | Read/Write | ~3–8 cm | Read/write ID device | Industrial ID, logistics |
| T5577 / ATA5577 | Microchip | 363-bit EEPROM | Read/Write | ~3–8 cm | Multi-format emulator (EM, HID, Indala…) | Universal LF blank, rewritable access, credential encoding |
| T5557 / e5551 (Q5) | Microchip (legacy) | ~330-bit EEPROM | Read/Write | ~3–8 cm | Programmable predecessor to T5577 | Legacy access systems, T5577 emulation |
| F5577 (T5577 clone) | Fudan / generic | ~363-bit EEPROM | Read/Write | ~3–8 cm | Low-cost T5577-equivalent rewritable | Rewritable access, emulation (cost-driven) |
| HITAG 1 | NXP | 256 / 2048-bit EEPROM | Read/Write | up to ~30 cm | Anti-collision, multi-tag, noise immunity | Laundry, logistics, industrial tracking |
| HITAG 2 | NXP | 256-bit EEPROM | Read/Write | up to ~30 cm | Proprietary crypto (legacy, weak) | Legacy access, vehicle ID, immobilizer |
| HITAG S | NXP | 256 / 2048-bit EEPROM | Read/Write | up to ~30 cm | Password, unique TID, ISO 11784/85 | Animal ID, laundry, industrial |
| HITAG µ (mu) | NXP | up to 3 kbit EEPROM | Read/Write | up to ~30 cm | Latest NXP LF platform, higher memory, ISO 11784/85 | Animal ID, industrial, access (newest NXP LF) |
| HID ProxCard II (compatible) | HID Global | Fixed credential | Read-Only | ~5–15 cm | 26–37-bit Wiegand, no crypto | Corporate / building access (HID reader infrastructure) |
| FM4100 / TK4100 | Fudan / generic | 64-bit ROM | Read-Only | ~3–10 cm | Low-cost EM4100 clone, fixed UID | Access control, attendance (cost-driven projects) |
Read ranges are indicative for passive cards with a standard antenna; actual performance varies with reader power and environment. Contact our team for chip-specific project advice.
Application Scenarios
Accurate employee check-in/out and attendance management.
- Reads reliably on standard 125 kHz attendance terminals
- Supports UID-based employee identification per card
- Compatible with most installed attendance reader brands
Secure building and area access for employees and visitors.
- Works with HID-compatible and legacy LF access readers
- Available in read-only or password-protected chip variants
- Durable CR80 card withstands high-frequency daily use
Vehicle entry/exit control and parking fee management.
- Fast proximity read at entry/exit barrier gates
- Rewritable T5577 chip option for multi-lot systems
- Custom printing with vehicle or permit information
Membership programs, loyalty, and general identification.
- Full-color printing for branded membership card design
- Sequential UID or barcode for member record linking
- Magnetic stripe add-on available for dual-system use
Frequently Asked Questions
What frequency do LF RFID cards operate at, and what chip options are available?
LF RFID cards from CedaGlo operate primarily at 125 kHz, with 134.2 kHz available on selected chips. Supported chip platforms include EM4100, EM4200, TK4100, T5577, ATA5577, HITAG 1, HITAG 2, HITAG S, and EM4305. Memory capacity ranges from UID-only to approximately 2 Kbit depending on the selected chip, covering read-only, rewritable, and password-protected variants.
Are your 125 kHz RFID cards compatible with existing LF readers and legacy access control systems?
Yes. Our LF RFID cards are designed for broad compatibility with standard 125 kHz proximity readers from major brands, including HID-compatible systems and other legacy LF infrastructure. For rewritable requirements, chips such as T5577 or ATA5577 support multi-format emulation, allowing integration with a wide range of installed reader bases without replacing existing hardware. Learn more about our LF RFID card range.
What industries and use cases are LF RFID cards suitable for?
LF RFID cards are widely deployed in access control, time and attendance management, parking entry and exit systems, membership programs, and general identification. Their reliable read performance at 2–10 cm makes them suitable for both high-throughput entry gates and contactless identification terminals. CedaGlo supplies LF RFID cards to system integrators, facility managers, and card program operators across multiple industries.
Can I get custom-printed LF RFID cards with our company logo and employee numbers?
Yes. CedaGlo offers full card personalization including silk-screen and offset printing, UID and sequential number printing, barcode, QR code, and optional magnetic stripe. OEM and ODM programs are supported for access control cards, employee ID cards, and parking cards. Please contact our sales team with your artwork files and quantity requirements to receive a tailored project quote.
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View DetailsRequest a Quote for LF RFID Cards
Tell us your chip requirement, card material, print artwork, and order quantity — our team will respond with a tailored project quote within 1 business day. Minimum order from 100 pcs; bulk pricing available for 300+ pcs projects.