RFID 125Khz Tags
Chip:TK4100
Freuency:125KHz
Color:Blue
Quick Specifications
| Frequency | Chip | MOQ | Lead Time |
|---|---|---|---|
| 125kHz | TK4100 | 100 pcs | 5-7 Days |
Certifications: ISO 9001:2015 | CE | RoHS | FCC
Technical Specifications
| Parameter | Specification |
|---|---|
| Product Name | RFID 125kHz Key Fob Tag |
| Chip Type | TK4100 (Compatible with EM4100/EM4200) |
| Operating Frequency | 125kHz (LF - Low Frequency) |
| Protocol | ISO7814/5, EM-Marine |
| Memory | 64 bits (Read-Only) |
| Reading Distance | 2-5 cm (0.8-2 inches) |
| Dimensions | 37 × 30 × 4 mm |
| Material | ABS Plastic (IP67 Waterproof) |
| Working Temperature | -20°C to +70°C (-4°F to +158°F) |
| Working Life | 100,000+ read cycles / 10+ years |
| Weight | 5g (0.18 oz) |
125kHz RFID Chip Comparison: Why Choose TK4100?
| Feature | TK4100 ✓ | EM4100 | T5577 | EM4305 |
|---|---|---|---|---|
| Read/Write | Read-Only | Read-Only | Read/Write | Read/Write |
| Memory | 64 bits | 64 bits | 363 bits | 512 bits |
| Clone Risk | Low | Low | High | Medium |
| Unit Cost | $ (Lowest) | $ | $$ | $$ |
| Best For | Access Control | Basic ID | Cloning/Test | Multi-app |
Why TK4100?
- Factory-programmed unique ID prevents unauthorized duplication
- Lowest cost per unit for large-scale deployments
- Full compatibility with existing EM4100/EM4200 infrastructure
- Ideal for property management, corporate access, and time attendance systems
B2B Procurement Advantages
- Low MOQ: Starting from 100 pcs, ideal for pilot projects and small deployments
- Bulk Pricing: Volume discounts available for orders 1,000+ / 10,000+ / 50,000+ units
- Fast Production: 5-7 working days for standard orders; Express 3-day available
- Free Samples: Stock samples available for evaluation before bulk order
- OEM/ODM Support: Custom colors, logo printing, laser engraving, UID encoding
Industry Applications
| Industry | Use Cases |
|---|---|
| Property Management | Apartment access, gate control, elevator access, parking systems |
| Corporate | Office building access, time attendance, visitor management |
| Healthcare | Staff identification, restricted area access, equipment tracking |
| Education | Dormitory access, library systems, campus access control |
| Hospitality | Hotel room access, gym membership, resort amenity access |
| Industrial | Warehouse access, hazardous area control, asset management |
Packaging & Shipping
| Item | Specification |
|---|---|
| Inner Packing | 100 pcs/bag |
| Carton Quantity | 2,500 pcs/carton |
| Carton Size | 38 × 20 × 28 cm |
| Gross Weight | 12 KG/carton |
About Syntek Smart Technology
Syntek Smart Technology Co., Ltd is a professional RFID products manufacturer located in Hunan Province, China. With over 10 years of experience in RFID tag design and production, we serve clients worldwide in access control, asset tracking, and identification solutions.
Manufacturing Capabilities:
- Monthly production capacity: 5 million+ pcs
- In-house chip bonding and ultrasonic welding
- Full QC inspection before shipment
- ISO 9001:2015 certified quality management system
FAQ
Q: Q1: What is the difference between TK4100 and EM4100?
A: TK4100 and EM4100 are fully compatible 125kHz RFID chips with identical 64-bit read-only memory and EM-Marine protocol. TK4100 is manufactured by a different foundry but offers the same functionality at a competitive price point, making it ideal for large-scale access control deployments.
Q2: Can I duplicate or clone these RFID keyfobs?
TK4100 chips are read-only with factory-programmed unique IDs. They cannot be rewritten or cloned like T5577 chips. This provides better security for access control systems. If you need writable/clonable tags, please inquire about our T5577 or EM4305 keyfobs.
Q3: Are these keyfobs compatible with HID proximity readers?
Standard TK4100 keyfobs use EM-Marine protocol and are not directly compatible with HID proprietary format. However, we offer HID-compatible 125kHz keyfobs upon request. Please contact our sales team for HID, AWID, or other proprietary format requirements.
Q4: What is the typical reading distance?
The reading distance depends on your reader's power output, typically ranging from 2-5 cm (0.8-2 inches) for standard proximity readers. Some high-power readers may achieve up to 10 cm. For longer range applications (1m+), consider our UHF RFID solutions.
Q5: Can I get custom colors, logos, or UID encoding?
Yes. We offer full OEM/ODM customization including: custom ABS colors, logo printing (silk screen/inkjet), laser engraving for serial numbers, and pre-encoded UID sequences. MOQ for custom orders is typically 500-1,000 pcs depending on customization complexity.
Q6: How secure are 125kHz RFID systems compared to 13.56MHz?
125kHz LF RFID is designed for basic access control with unique ID authentication. It does not support encryption like 13.56MHz high-frequency cards (MIFARE, DESFire). For high-security applications requiring encryption and mutual authentication, consider upgrading to our 13.56MHz NFC keyfobs.
Q7: What is your MOQ and lead time for bulk orders?
Standard MOQ is 100 pcs with 5-7 working days production time. For orders over 50,000 pcs, lead time is 10-15 working days. Express production (3 days) available for urgent orders with additional fees.
Q8: Do you provide free samples for testing?
Yes. We provide free stock samples (2-5 pcs) for qualified B2B customers. Freight charges may apply depending on destination. For custom samples, tooling fees may apply which will be credited to future bulk orders.
Q9: Are these keyfobs waterproof? What environments can they withstand?
Yes. Our ABS keyfobs are IP67 rated waterproof, acid-resistant, and alkali-resistant. Operating temperature range is -20°C to +70°C, suitable for outdoor installations, industrial environments, and normal daily use including hand washing.
Q10: What payment and shipping terms do you offer?
We accept T/T, PayPal, Western Union, and L/C for large orders. Shipping options include DHL, FedEx, UPS express (3-5 days) and sea freight for bulk orders. FOB Shenzhen, CIF, and DDP terms available.
Our Production Facility
Our state-of-the-art production facility features automated chip bonding lines, ultrasonic welding stations, and comprehensive quality control checkpoints to ensure consistent product quality for every order.
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