Euro Cuisine YMX650 Automatic Digital Yogurt Maker nm kitchen wall 60Hz Battery Backup 10 Year Sealed 60Hz Battery Backup 10 Year Sealed Lithium Battery Detection Features Smoke Sensor Ionization CO Sensor Electrochemical Audio Alarm 85 dB at 10 feet CO Alarm Levels Activates at: 400 PPM CO (4 15 minutes) 150 PPM CO (10 50 minutes) 70 PPM CO (60 240 minutes) Indicator Lights Constant Green (AC Power) Red LED (Smoke CO Alerts) CO Alarm Levels Activates at: 400 PPM (4 15 minutes) 150 PPM (10 50 minutes) 70 PPM (60 240 minutes) Safety and Functionality Latching Features Alarm Latch and Low Battery Latch Silence Options Alarm Silence & Low Battery Silence (8 hours) End of Life Warning 5 Chirps Minute (Replace Unit) Malfunction Warning 3 Chirps Minute Reset Function Automatic Reset After Alarm Clears Extras and Installation Mounting Options Wall or Ceiling Included Hardware Yes Makes 42 ounces in 6 to 10 hours and even thickness