Fongwah Consumables Division

Durable 125KHz LF RFID Key Fob – TK4100 Access Control Tag

Model: FW-KF-4100

Frequency Band

（LF）125 kHz

Chip Type

TK4100 (Fully compatible with EM4100/EM4200)

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Durable 125KHz LF RFID Key Fob – TK4100 Access Control Tag

Product Description

Our 125KHz LF RFID Key Fob is a highly durable, lightweight, and cost-effective identification solution designed specifically for apartment access control, workforce time attendance, and parking management systems.

Embedded with the reliable TK4100 (EM4100 compatible) chip, this key fob features a read-only 64-bit unique identification code. Operating at a low frequency of 125KHz, it ensures excellent penetration through shielding materials and stable performance around water or human bodies.

Encased in a rugged, ultrasonic-welded ABS plastic shell, it is completely waterproof, shockproof, and built to withstand the rigors of daily keychain carrying without cracking or fading.

Technical Specifications

Product Model FW-KF-4100

RFID Chip Type TK4100 (Fully compatible with EM4100/EM4200)

Frequency Band （LF）125 kHz

Dimensions 35.3 x 28 x 6.2 mm / 40.5 x 32 x 4.2 mm (Various housing styles available)

Material & Craft Rugged ABS Shell / Ultrasonic Welding

IP Protection Rating IP67 Waterproof

Memory Capacity 64-bit Unique ID (Read-Only)

Evaluated Read Range 1 - 5 cm (Reader and antenna dependent)

Customization Options Laser engraved ID number/Inkjet printing, custom colors (Blue, Red, Yellow, Black, etc.), silk-screen printed logo, bundled with keyring.

Deployment Suitability Access Control

Request Custom Arrays for Durable 125KHz LF RFID Key Fob – TK4100 Access Control Tag?

Our engineering division will review your target applications and deployment environment parameters to compile an optimized sourcing proposal within 12-24 business hours.

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Durable 125KHz LF RFID Key Fob – TK4100 Access Control Tag

Product Description

Technical Specifications

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Request Custom Arrays for Durable 125KHz LF RFID Key Fob – TK4100 Access Control Tag?