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 Plugs into any standard 120V outlet,install it into a TV stand, fireplace cabinet or use it freestanding Can enjoy the flame effect without heat.Realistic flame effect with 4 adjustable brightness settings Timing function can set the time from 0.5 to 6Hours,don't worry about forgetting switching off this room heater or fire risk. 11 temperature settings ,64F to 82F,ON meas heater keep working