I'm also purchasing a Cooper Key-KP01 which I want to use along side the MKP1 keypads. I notice the connections are different however with the TS900 having A,B,C,D & E network connectors and the KP01 having 0v,12v A B RAS485. I know the A on KP1 is 12v and the B is 0v what what about the data...