Suncourt SW100 Current Switch by Suncourt

Can I adjust the current sensitivity?

Would it be code permissible to also run a single pole switch to bypass this switch for manual operation when/if desired?

Will the device sense current if i feed the entire cord (i.e. l1, n & grd) thru the hole? trying to avoid disturbing the existing wires for warranty.

is this avail in normally closed? instead of normally open