I went to a local boat show and picked this up on special at $175 (plus monitoring costs at $9 per month). If you're like me and worry about the welfare of your boat while away, this is a find. It monitors motion and hatch with optional sensors, high water threshold, bilge pump activation, temperature and battery level, even lets you set a "geo fence" alert so you'll know if your boat drags or is moved.

Will report on it after I install it and test a bit.