CloneMyKey® is a replacement/duplicate key service which is in no way affiliated with, or endorsed/sponsored by, the original key provider.
Copying & Cloning Services For
The Schlage Mifare(r) DESFire key cards are designated by the model numbers 8420 & 8520 printed on the back side of the key card.
These key cards use encryption to make duplication challenging. Greater support for this format is expected soon. Please add yourself to the list below to be notified once we support this format.
Cloning & Copying Options
Schlage 8420 & 8520 Details
Manufacture: Schlage (Owned by Allegion)
Alternative Names: N/A
Format Names: Mifare® DESFire® EV1 4K
Technology: Radio Frequency Identification (RFID) using high frequency data transfer
8420 Key Type: High Frequency Contactless/Proximity Key Card in clam shell form factor
8420 Dimensions: 3.37″ x 2.125″ x 0.075″
8520 Key Type: High Frequency Contactless/Proximity Key Card in ISO glossy white finish
8520 Dimensions: 3.37″ x 2.125″ x 0.033″ (CR80)
Weight: #oz (#g)
Material: PVC Plastic
Antenna Size: Unknown
Antenna Geometry: Rectangle
Modulation: ISO/IEC 14443-4
Interface: ISO/IEC 14443-4
Typical Range: Less than 1 inch
Bit Length: Unknown
Possible Combinations: Unknown
Facility Code Range:Unknown
Storage Capacity: 4K (4096 bytes)
Due to forgeries, non-production models & other unforeseen factors there is always a small possibility that a key may not be duplicatable. All success rate percentages displayed are the result of data collected from the previous 12 months of operation to the end of the last completed calendar month.
All trademarks and registered trademarks are the property of their respective owners. CloneMyKey.com
30 W. Mifflin St. Suite 903
Madison, WI 53703 USA