Dear Khun Wally,
As we try to do shortcut to check keypad all of them took out and to connect from the Vantage controller but still showed red at the keypad however we measurement the volte from power supply got 35 VDC when we measurement from Vantage output got 33 VAC please advise on this issue ( we disconnected long cable link from Vantage and connect direct from Vantage but still got the same issue ) I think should not came from the cable issue