125K RF Card E4100 RFID&NFC?Communication :Elecrow bazaar, Make your making Electronic modules projects easy.

This is a proximity identification token of 125Khz, EM4100. You can use it with the 125K RFID reader module, often used for electronic locks or customer identification.

Specification

Frequency: 125K
Dimension: 85.5mm x 54mm x 1mm