Can the PDL 654PB push button dimmer do two way dimming



No, 2 way dimming can not be achived via 654PB
However we do have a number of products which are and will enable this  
Saturn One Touch can be two 3 and 4 way dimmed
Iconic 300 series can do this with the control link slave mechs the slave mech talks to any control link master mech dimmer, timer , timeclock or switch  

We also have a number of modules that will enable two and 3 switch switching or dimming using a master iconic mech and push button or a Nero dim module