5 in 1 Dual Format Key Fob

Copy multiple RFID keys (Gym, Home, Office, Car Park etc) to the dual frequency 5 in 1 tag and then just carry the one key fob.

Select above from two types of tags:

 TYPE 1: 4 x T5577 Tags & 1 x UID Tag

• If no button is pushed, the UID tag is active.  This can be programmed to the Mifare Classic 13.56MHz S50 1K 4 Bytes format.
  
• Or if a button is pushed, 1 of 4 T5577 chips becomes active.  There are 4 T5577 chips which are activated (one at a time) when their corresponding button is pushed.  The T5577 tags can be programmed to common 125KHz formats such as HID ProxCard II, EM4100 and more.

TYPE 2: 4 x UID Tags & 1 x T5577Tag

• If no button is pushed, the T5577 tag is active. This can be programmed to common 125KHz formats such as HID ProxCard II, EM4100 and more.
• Or if a button is pushed, 1 of 4 UID chips becomes active. There are 4 UID chips which are activated (one at a time) when their corresponding button is pushed. The UID tags can be can be programmed to the Mifare Classic 13.56MHz S50 1K 4 Bytes format.

How it works:

• Using a RFID writer/programmer such as the Proxmark3, iCopy 8, or EM4100 Duplicator, program each of the tags in the keyfob.
• To switch between tags, push (and hold) the respective buttons.