10pcs 125kHz RFID Keyfobs TK4100 EM4100 – Door Access Control

10-Pack 125kHz RFID Proximity Keychain Fobs – TK4100 / EM4100

Upgrade your door entry access control system with this convenient 10-pack of 125kHz RFID proximity keyfobs. Compatible with TK4100 and EM4100 chip standards, these compact ABS keychains are designed to work seamlessly with most standard 125kHz RFID readers used in offices, apartment buildings, gyms, and homes. Each fob comes pre-attached with a sturdy key ring, making it ready to use right out of the box.

Key Features

• Chip Standard: TK4100 / EM4100 – Read-Only, 125kHz frequency
• Material: Durable ABS plastic housing
• Dimensions: Approx. 43.7 × 30.5 × 5.3mm – slim and lightweight
• Wide Operating Temperature: -40°C to 85°C for year-round reliability
• Water-Resistant: Shrugs off everyday splashes and rain with ease
• Color Options: Available in 8 vibrant colors – mix and match for different users or access levels
• Pack Quantity: 10 keyfobs per pack, each with an included key ring
• Compatibility: Works with most standard 125kHz EM/TK proximity card readers

Perfect For

• Office and building access control
• Apartment or condo entry systems
• Gym, club, or facility membership tracking
• Home security door locks
• Replacing lost or worn-out RFID tokens

Why Choose This Pack?

Getting 10 fobs in one go means you'll have enough for the whole team, family, or facility without reordering frequently. The color-coded options let you assign specific fobs to specific individuals or access zones at a glance. The compact, keychain-style form factor means they go wherever your keys go — no extra bulk, no fuss.

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Frequently Asked Questions

Q: What RFID frequency and chip type do these keyfobs use?

A: These keyfobs operate at 125kHz and use the TK4100 / EM4100 chip standard, which is a widely adopted read-only format compatible with the vast majority of 125kHz proximity card readers used in access control systems worldwide.

Q: Are these 125kHz RFID keyfobs waterproof?

A: Yes — the keyfobs feature a water-resistant ABS plastic housing rated to handle everyday splashes and rain. They also operate reliably across a broad temperature range of -40°C to 85°C, making them suitable for both indoor and outdoor use.

Q: Can I use these RFID keyfobs to replace existing access cards or fobs in my building?

A: These fobs are compatible with most standard 125kHz EM4100/TK4100 proximity readers. However, compatibility depends on your specific access control system. If your system supports 125kHz read-only proximity tokens, these fobs should work. Always verify your reader's chip standard before purchasing.

Q: How many colors are available and can I order a mix?

A: These keyfobs are available in 8 different colors. Color options allow you to color-code fobs for different users, departments, or access zones, making management simple and intuitive.

Production & Packaging Notice

To maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.