I'm trying to wire up this with the corresponding VP0SR-1LZ.  The wiring diagrams match up perfectly for the Remote Switch, but the LTB60 is asking for 5 wires and I only have 4 (including the ground).  I've identified the ground, 2nd traveler and neutral wires, but I have one black wire where the instructions are calling for a Load Wire and a first traveler.  Any ideas?  Can I sure this switch.  It's replacing an older version of the  Leviton PR180 motion sensor switch.

Can I use this switch, if not, is there a time switch that can work in my set up.