Product review (1 stars): Board failed after 3 weeks.
This board worked for about 3 weeks, but has now failed.  It started beeping and when I pressed the Clear button, the beeping stopped and "F7" appears in the display and it will not function at all.  I tried to return/exchange, but was told it was not eligible because it has been more than 30 days.  I have had the product for 40 days!  I contacted Amazon customer service and was connected to a very poor English speaking person with a static phone connection.  They put me on hold, and 15 minutes later the phone was disconnected.  I am very angry!  Do not buy this product - it is a lemon.  I am pretty sure I am out $185.