Blue 100pcs 125Khz Proximity ID Card Chip TK EM 4100 RFID Tag Key Fob Keyfobs Keychain Ring Token for Access Control

Works with paradox?

I just bought your 4 door system that came with 50 fobs, if i purchase these fobs will they be different id numbers from the ones i got in the kit?

I have an existing access system that uses hid fobs, can i use these fobs on that system and do they have numbers on them to assign to people?

Are they sequentially numbered with the numbers on the outside? Any different colors available?