Import 125khz Tk4100 Em4200 T5577 Chip Rfid Key Fob — Buy in Bulk from Supplier in China

Uniontags Technology Limited supplies 125kHz RFID key fobs in Putian, Fujian, China, compatible with TK4100, EM4200, EM4305, EM4450, and ATA5577 chips. The fobs are moulded from ABS plastic and come in nine standard dimensions, including 43.85 x 30.5 x 5.3 mm, 55.9 x 37.08 x 8.85 mm, and 62.15 x 37.30 x 6.06 mm, with custom sizes and shapes available. Each unit contains a copper wire antenna and supports silk-screen printing for branding or numbering.

Operating at a frequency of 125 kHz, the low-frequency read range is 1 to 5 cm, while the high-frequency range (for EM4305/EM4450 variants) extends to 2 to 8 m, depending on the reader. EEPROM capacities vary by chip: TK4100 and EM4200 offer 512 bits, ATA5577 provides 330 bits, and EM4450 delivers 1 kbit. The working temperature range is -25 °C to +50 °C, and typical ABS RFID fobs in the market are rated IP67 for dust and water resistance, though this should be confirmed with the supplier.

These fobs are specified for public transportation, parking systems, identity authentication, attendance tracking, and admission ticketing. Uniontags offers free samples of smart cards before order placement and packages units in bags of 100, with 200 pieces per box and 10 boxes per carton. Buyers should confirm the exact chip variant, MOQ, and lead time directly with the supplier, as these details are not specified in the listing.

Uniontags Technology Limited is a supplier based in Putian, Fujian, China, with an address at 7/F, 4th Building, Zhengrong Time Square. The company is listed on the marketplace with a 'harbor' trust tier, indicating a baseline level of platform verification. The listing provides no response rate data or average response time, so buyers should initiate contact to gauge communication reliability.

The supplier's profile focuses on RFID key fobs and smart cards, offering a range of chip technologies and customisation options including printing and laser numbering. The listing does not state the company's founding year, employee count, production capacity, or specific client portfolio. It does mention free samples for smart cards prior to order, which is a common sourcing practice in the industry.