Hello club members. I just registered and are new to this forum and thus appreciate any tips. I just puchased a 2007 290 Sundancer with T-260. I spent last night in the boat and heard a loud alarm which lasted about 30 seconds that seemed to come from within the cabin (panel area). This again happened 7 hours later. Again all engines were off and generator was running fine. The smart system had nothing reported under heading alarm history. Also, it was not the CO2 sensor. After another 5 hours again the alarm but this time the engines were running. Any ideas? Much appreciated.