Product Overview
The Epoxy Access Control RFID Keyfob is a compact HF keychain tag with a premium epoxy resin coating, combining reliable near-field communication performance with an attractive, wear-resistant finish. Built around the widely adopted 13.56MHz frequency and ISO 14443A protocol, it works seamlessly with MIFARE-compatible readers found in offices, schools, gyms, and apartment buildings worldwide.
The hard epoxy surface protects the embedded chip and antenna from daily wear, moisture, and scratching — extending the service life far beyond standard PVC keyfobs. Available in round, rectangular, or fully custom shapes with a variety of surface finishes and printing options, this RFID access control keyfob is easy to brand with logos, QR codes, or serial numbers to meet any identity management requirement.
Key Features
Premium Epoxy Coating
A durable epoxy resin finish seals the chip and antenna, providing excellent resistance to water, abrasion, and daily wear for long-term use.
Multiple Chip Options
Supports MIFARE Classic (1K/4K), MIFARE DESFire EV1/EV2/EV3, MIFARE Ultralight, and Fudan F08 — covering a wide range of access control system requirements.
High-Security DESFire Option
MIFARE DESFire EV1/EV2/EV3 offers AES-128 hardware encryption and mutual authentication — ideal for high-security access control deployments.
Fully Customizable Shape & Size
Round, rectangular, or completely custom shapes from 20mm to 50mm+, with single-side or double-side epoxy and multiple hole and keychain accessory options.
Custom Printing & Branding
Supports CMYK full-color printing, silkscreen, and Pantone color matching for logos, QR codes, serial numbers, and UIDs on the keyfob surface.
Long Data Retention
Write endurance of 100,000 cycles and data retention up to 50 years ensure consistent performance across the entire product lifecycle.
Product Specifications
| Parameter |
Specification |
| — RFID PARAMETERS — |
| Frequency |
13.56 MHz |
| Protocol |
ISO 14443A |
| Chip Options |
MIFARE Classic 1K / MIFARE Classic 4K / MIFARE DESFire EV1 / EV2 / EV3 / MIFARE Ultralight / Fudan F08 |
| UID |
4 bytes / 7 bytes (chip-dependent, read-only, assigned at manufacturing) |
| Memory |
144 bytes (Ultralight) / 1KB / 4KB / 8KB (chip-dependent) |
| Read Range |
1–6 cm (reader-dependent) |
| Write Endurance |
100,000 cycles |
| Data Retention |
50 years |
| Operating Mode |
Passive |
| Pre-encoding |
URL, serial numbers, custom data writing before shipment |
| — PHYSICAL PARAMETERS — |
| Shape |
Round / Rectangular / Custom |
| Size |
20–50mm+ (fully customizable) |
| Thickness |
1.2–2.5 mm (customizable) |
| Surface Material |
Epoxy resin coating over PVC base |
| Epoxy Side |
Single-side or double-side |
| Surface Finish |
Glossy / Matte / Holographic / Transparent |
| Hole Type |
Standard hole / Metal eyelet reinforced |
| Color |
Fully custom (CMYK / Pantone) |
| Printing |
CMYK full color / Silkscreen |
| Accessories |
Elastic cord / Metal keychain (optional) |
| Working Temperature |
-20°C to +60°C |
| Packaging |
Individual PP bag / Custom packaging |
Applications
Office & Building Access Control
Deploy as a daily-use HF RFID access key fob for offices, schools, and restricted areas with MIFARE-compatible door readers.
Gym & Locker Management
Assign to members for locker access, equipment check-out, and membership verification at fitness centers and swimming pools.
Parking & Vehicle Verification
Use for parking lot entry authorization and vehicle management at residential and commercial facilities.
Employee & Visitor ID
Issue personalized keyfobs with printed serial numbers or employee IDs for staff attendance tracking and visitor management.
Apartment & Hotel Key Replacement
A stylish, durable replacement for magnetic stripe keys in residential buildings, hotels, and serviced apartments.
Membership & Loyalty Programs
Provide branded RFID keyfobs as membership tokens for clubs, libraries, and retail loyalty programs requiring frequent scanning and long-term use.
Why Choose RFIDSU?
0+
Years in RFID Manufacturing
OEM
Full OEM/ODM Custom Service
Free
Samples Available on Request
Shenzhen RFIDSU Technology Co., Ltd. is a professional RFID tag manufacturer with 10+ years of experience in producing epoxy RFID keyfobs and HF access control tags. We specialize in custom NFC key fobs for access control systems, locker management, and personnel identification, exported to 50+ countries with full OEM/ODM support.
Customization Options
We offer full OEM/ODM service for epoxy RFID keyfobs. Tell us your requirements — we handle chip selection, shape, color, printing, encoding, and packaging.
Chip Selection
MIFARE Classic 1K/4K, DESFire EV1/EV2/EV3, Ultralight, Fudan F08, or other HF chips on request.
Shape & Size
Round, rectangular, or fully custom mold shapes from 20mm to 50mm+. Custom tooling fee applies for new molds.
Epoxy Finish
Single-side or double-side epoxy with glossy, matte, holographic, or transparent surface finish options.
Color & Printing
Full CMYK color printing, silkscreen, or Pantone color matching for logos, QR codes, and serial numbers.
Pre-encoding
URL encoding, serial number programming, or custom data writing service before shipment.
Accessories & Packaging
Elastic cord or metal keychain accessories in various colors; individual PP bag or custom carton packaging available.
Frequently Asked Questions
What frequency do these epoxy keyfobs operate at?
These keyfobs operate at 13.56MHz (HF), using the ISO 14443A protocol. They are compatible with standard MIFARE readers used in most access control systems worldwide.
What is the difference between MIFARE Classic and MIFARE DESFire?
MIFARE Classic offers a cost-effective solution for basic access control and locker management. MIFARE DESFire EV1/EV2/EV3 adds AES-128 hardware encryption and mutual authentication for high-security deployments where cloning prevention is critical.
Can I print our company logo on the keyfob?
Yes. We support full-color CMYK printing, silkscreen printing, and Pantone color matching. Logo, QR code, serial number, and custom artwork can all be printed directly on the epoxy surface.
What shapes and sizes are available?
Standard options include round and rectangular shapes in sizes from 20mm to 50mm+. Fully custom shapes are available with a custom mold — contact us for tooling details and minimum order quantities.
What is the read range of these HF RFID keyfobs?
The read range is typically 1–6 cm depending on the reader antenna and chip type. This is standard for 13.56MHz HF access control keyfobs and suitable for tap-to-open door readers and locker control systems.
Can the keyfobs be pre-encoded before shipping?
Yes. We provide pre-encoding services including URL programming, sequential serial numbers, and custom data writing. Simply provide your encoding requirements and we will program the keyfobs before delivery.
