X10WTI never changed the part numbers to indicate Soft Start features.
So in the very beginning of the change over you could receive before Soft Start or Soft Start modules in an order. I believe a few actually received some of each in the same order.
Some of the early Soft Start Modules would only turn On to about 50%. I found bad triacs in a few of mine. Changing them corrected the issue.
X10 and X10Pro Lamp Modules and dimmer type Wall Switches now have Soft Start. The wall switches also have Preset Dim. I don't know if the dimmer type fixture modules do Soft Start now.
http://kbase.x10.com/wiki/SoftStarthttp://kbase.x10.com/wiki/Newer_Wall_Switches_and_Preset_DimI have seen two different Soft Start Lamp Modules.
The early ones {my Date Code: 08A01}did not flash correctly when being used with a Security Console. They would slowly ramp On and Off.
The later ones {my Date Code: 09J44} still ramp On and Off normally but when being flashed by a Security Console would temporarily instantly go On and Off.
On both Date Code LM465s I have. They do not dim all the way down with standard X10 commands. My estimate is about 25% to 30% of being all the way Off. They may with X10 Extended Commands but I have not tried it.
There is a different modification to remove the Local Control Sensing on the Soft Start LM465s. As they are a completely different design from the old before Soft Start models.