CSA/UL certification ensures long time services and user's safety Double safety protection device, one is overheat protection device, automatically cut off when thetemperature is too high, the other one is fuse 1500W heat/ 5000 BTU's per hour provides supplemental heat up to 400 Sq. ft. to help you save money Can enjoy the flame effect without heat.Realistic flame effect with 4 adjustable brightness settings Timing function can set the time from 1 to 9Hours,don't worry about forgetting switching off this room heater or fire risk. 11 temperature settings ,64F to 82F,ON meas heater keep working 2-IN-1 design,and the full KD construction, with comprehensive installation instructions and coded parts, makes assembly a breeze and fun for our customers