visiPower 125kHz RFID Key Fob 50pcs Blue smart door lock

125 kHz RFID Key Fobs 50 Pack

These blue key fobs operate at 125 kHz and come in a pack of 50 for proximity access control systems. Each tag arrives pre-programmed with a unique 10-digit ID engraved on the casing. They suit building managers or installers who need to issue credentials for unencrypted 125 kHz readers. Buyers whose systems require 13.56 MHz or encrypted protocols cannot use these tags.

Capacity and headroom

The fobs are readable and rewritable but cannot be re-programmed after the factory-set ID is written. Data retention is rated for 10 years and the chips survive 100,000 wiping cycles. Operating distance reaches 10 cm and the working temperature range spans -25 °C to +75 °C. Systems that demand field-programmable IDs or longer read ranges will find these tags insufficient.

ABS Plastic construction and mounting

Each fob measures 1.4 by 1.1 by 0.2 inches and uses a blue ABS plastic shell. The compact size allows attachment to key rings or lanyards for daily carry. Anti-interference design helps maintain reliable reads in typical indoor environments. Installations that need ruggedised enclosures or specialised mounting hardware must look elsewhere.