[Elecraft] Can the external Auto Tuner be used with other rigs?

[Darwin, Keith]

I'm interested in some day getting a K2.  Currently I'm setting up an
antenna that could really benefit from an auto tuner, preferably located
at the antenna feed point.  I'm considering the Elecraft auto tuner.
 
Can it be run with rigs other than the K2?
 
Is it durable enough to work in outside temperatures (Winter in VT)?
 
Can it be run remotely?
 
- Keith -