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125kHz TK4100 RFID Key Fob Tag

Durable 125 kHz LF key fob for access control and ID—PPS/ABS/epoxy housings, multiple chip options (TK4100/T5577/EM series), custom logo/serial printing, and various colors.

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Passive LF key fob for everyday access and identification. Built on 125 kHz technology with durable housings (PPS/ABS/epoxy), it supports custom printing and multiple chip options for smooth deployment across doors, gates, and shared amenities.

Features

  • 125 kHz LF operation for short-range taps

  • Durable housings: PPS, ABS, epoxy, etc.

  • Customization: logo and serial number printing

  • Multiple chip options to match existing systems

  • Wide color choices (black, white, green, blue, etc.)

Typical Applications
Access control systems • Attendance control • Identification • Logistics and industrial automation • Tickets and membership • Public transportation • Cashless e-payment • Swimming pools and laundry.

Notes on Common Keychains
Most condo/apartment amenity keychains (pools, gyms, elevators) use low-frequency 125 kHz passive RFID (e.g., TK4100, T5577, EM4200/EM4305). If a key fob opens the individual apartment unit door, it’s typically a high-frequency 13.56 MHz system (e.g., MIFARE 1K or NTAG213).

Table (Specifications)

Category Parameter Value
Product Type 125kHz TK4100 RFID Key Fob Tag
Materials Housing PPS, ABS, Epoxy, etc.
RF Frequency 125 kHz (LF)
Printing Options Logo printing; serial numbers
IC Options Available Chips TK4100; EM4305; EM4200; T5577; others
Colors Variants Black; White; Green; Blue; etc.
Applications Use Cases Access control; attendance; ID; logistics; industrial automation; tickets; membership; public transport; e-payment; swimming pools; laundry