Photolady,
Pentax AF200T, AF280T, and AF400T can somewhat communication with the current batch of Pentax DSLRs. It's not much, but you may find it useful. Please read
this post.
Originally posted by photolady But still want to know this: Also, is there a hot shoe adapter using off camera?
You can use RF remote flash trigger (e.g. Yongnuo 602).
Or you can use a flash extension cord like
this one.
I have one like that myself (the flash in the photo is a 540 but AF280T will work):
If you remember, I always recommend Sunpak 4xxD series (or its European 36Dx counterpart). One of the reasons is that the dedicated extension cord and module are readily available in the used market. When you use the extension cord, the sensor is still attached to the camera's hotshoe: