ID-12 RFID Sensor Question

Hello all,
I am making an automatic cat door that works off my cat's microchip (provider is 24PetWatch). I am planning to use the ID-12 RFID sensor to detect the microchip code. I am wondering whether it will read my cat's microchip successfully (because it is meant to be used with RFID key fobs).

Any advice would be appreciated. Thanks!

Can you tell if the chip is a 125 kHz chip or a 134.2 kHz chip?

It is a FECAVA/DESTRON chip. It complies with the ISO standard so I think it will be 125 KHz.

UPDATE:
I am not sure whether this is a 125 or 134 KHz chip. Turns out 24PetWatch has been using both types.