With dual-frequency choices of 125kHz and 13.56MHz and advanced encryption technology, our RFID key fob offers enterprise-grade performance. WS-RFID Technology makes each key fob with quality ABS or silicone encapsulation, which makes them very durable with a failure rate of less than 0.1%. With read ranges of up to 15 cm, data retention of 10 years or more, and over 100,000 write cycles, our key fobs work with hotel entry, workplace attendance, and smart building systems without any problems. We have been making high-quality products for 15 years and can make more than 500 million units a year. We can send regular orders in just 7–10 days.
Your input passwords must be strong enough for daily usage. The impact-resistant casings of our key fobs can withstand drops, scratches, and severe handling. Your personnel won't lose them because they're compact and attachable to purses, belts, and lanyards.
These key fobs function in parking lots, cold storage facilities, and heated industries from -25°C to +70°C.
We have common chip choices, such as:
Because of this, the chip can be changed to fit your price and protection needs.
With the system that is already in place, your product functions. We support both ISO/IEC 14443 and EM4100 protocols, which means that they will work with most access control readers around the world. Our key fobs work well with existing systems, so you don't have to spend a lot of money on system overhauls when you want to improve hotel locks or increase company security.
| Parameter | Specification |
|---|---|
| Operating Frequency | 125kHz (LF) / 13.56MHz (HF) |
| Communication Protocol | EM4100, ISO/IEC 14443, ISO 15693 |
| Read/Write Distance | 5-15cm |
| Storage Capacity | 1KB / 4KB / 8KB EEPROM |
| Data Retention | 10+ years |
| Write/Erase Cycles | 100,000+ cycles |
| Operating Temperature | -25°C to +70°C |
| Housing Material | ABS / Silicone |
| Printing Options | Offset, screen, digital (full-color CMYK) |
| Defect Rate | <0.1% |
| Available Chip Models | NXP Mifare, Desfire, Ntag, ICODE, Hitag, EM4100, Fudan, Huada |
Control how employees can get into limited areas, computer rooms, or R&D labs. Stop checking people in by hand and use digital attendance tracking instead.
Make it safe and easy for people to get into buildings, gates, and services. Registering guests and giving them temporary key fobs will make things safer.
Replace hotel room keys with key fobs that are sturdy and can be programmed again and again. Lessen the cost of replacing and make the guest experience better.
Automatically let vehicles in and out. Assign parking spots to specific people and easily keep track of how they're being used.
With a single pass, you can control who can enter the dorms, the library, and other school buildings.
Use encrypted access control to keep private areas like work zones, vaults, or classified document rooms safe.

We understand your brand matters. Our full OEM/ODM services include:
From initial design to final delivery, our team supports your vision. Free sample testing lets you verify quality before committing to large orders.
Our 10,000㎡ automated facility produces over 500 million units annually. Strict quality control ensures every RFID key fob meets international standards including CE, RoHS, REACH, and POPS compliance.
Without middlemen, factory-direct price gets rid of markups. Large-scale production and tight control over the supply chain make products very cheap without lowering the standard.
Field Application Engineers from our company can help you add key fobs to systems that are already in place. We offer SDK support, help with software integration, and quick fixing, all backed by a guarantee that lasts for one to two years.
Q: What's the difference between 125kHz and 13.56MHz key fobs?
A: 125kHz (LF) key fobs work well for basic access control and are cost-effective. 13.56MHz (HF) key fobs offer faster data transfer, better security encryption, and support NFC applications like mobile integration.
Q: Can I reprogram key fobs for different users?
A: Yes. Key fobs with read/write chips support reprogramming over 100,000 cycles. Read-only chips are programmed once during manufacturing.
Q: How do I ensure key fobs work with my current system?
A: Share your access control reader specifications with us. We'll recommend compatible chip models and protocols. Free samples let you test before ordering.
Q: What's your minimum order quantity?
A: We accommodate both small trial orders and large-volume deployments. Contact our team for specific MOQ details based on customization requirements.
Q: Do you offer technical support for system integration?
A: Absolutely. Our engineers provide SDK documentation, integration guidance, and ongoing technical support to ensure smooth deployment.
Q: How durable are these key fobs in outdoor environments?
A: Very durable. With an operating range of -25°C to +70°C and impact-resistant encapsulation, our key fobs perform reliably in parking lots, gates, and outdoor access points.
Ready to upgrade your access control system with an RFID key fob? Reach out to discuss your requirements: kenny@w-srfid.com. Let's build your smart security solution together.
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