I can't see the manual for the Crotech 3133 anywhere, but I can see one for the 3131 - it may be similar enough to help you. Here's a link to the download site (the download link is near the bottom of the page, it's quite a confusing layout):
I can't see the manual for the Crotech 3133 anywhere, but I can see one for the 3131 - it may be similar enough to help you. Here's a link to the download site (the download link is near the bottom of the page, it's quite a confusing layout):