Product review (2 stars): Dissappointed... don't waste your time and aggravation with this unit or company... move on to brand you can depend on.
Worked great for the first 18 months (thus the two stars) - and then like many other units purchased - it just died... apparently that is the issue with this model....  it gives you about 12 to 18 months and then one of three things happens, the sensor goes berserk, the control board fries or the entire circuit board dies... my issue was the entire circuit board... and as others have mentioned the seller not to be confused with the manufacturer... is easy to get a hold of and at least the customer service person I spoke to - does show some concern and apologizes for the issue... and quickly offers (as they know this product has issues) to send a replacement part... (3 year warranty)... but clearly the replacement part (at least in my experience so far is more of a gesture than a solution)... and while I'm not Bob Villa - I'm handy enough to do some minor wiring - I was told they would send me a video on how to install the replacement part myself - they sent an amateur jpeg that lacks any real helpful detail. The directions are very brief seem to leave out some important details... .. frustration is mounting...