I am trying to install and program a pc 1550, and when the unit is powered up, the keypad will beep. I have been told the keypad I am using is compatible, but I am not so sure. The panel is a pc 1500 rev
4m, and the keypad is a pc5000rk. The keypad is a 4 zone, but I only need 4 zones on the panel. I am trying to get into program mode, and I have done a hard reset, but I am not sure what to do here, any knowledge would be great.