50pcs Read Only 125khz EM4100 TK4100 Keys

Please note, EM4100 chip is read only, it cannot be used to record, it is used in Registering or Mastering way. If you want to buy a rewritable chip, you have to buy the T5577 EM4305 chip tags as following link:
https://www.aliexpress.com/item/32597110150.html


Details:
Material: ABS
Dimensions: Approximately 35 x 29 x 50mm
Response frequency: 125 KHz,
Chip type: TK4100 which compatible with EM4100
Operation Temperature : -40 - 85°C
Waterproof
Application scope: Public transportation, parking, ID identification, attendance system, ticketing, card payment, product logo, etc.
Each comes with Key ring included.
Each token pre-programmed with unique ID which is Laser printed