Key Fob EM 125kHz EM4100

Part# MAC-017-KF2 Access Control Key Fob Proximity EM 125kHz with Key Chain Features: Frequency: Proximity 125kHz ID Inductive range: 2-10mm (.079-.39in) IC Inductive range: 1-5mm (.04-.20in) Readable and Writable Time: >100000 Times Reaction Time: 1-2mS Data Retention: >10years For standard size: (3-3/8" x 2-1/8") Material: High quality PVC / PET / ABS Size: 40 x 32 x 4mm Spec Sheets: Key Fob EM 125kHz