CSA/UL certification ensures long time services and user's safety,can be sold in the U.S. and Canadian markets Extremely high securityDouble safety protection device, one is overheat protection device, automatically cut off when thetemperature is too high, the other one is fuse 1400W heat/ 5000 BTU's per hour provides supplemental heat up to 400 Sq. ft. 11 temperature settings: 64F -82F,ON meas heater keep working 50000 Hours life time LED light source.Timing function can set the time from 1 to 9 Hours 2 Display Styles(Recessed in wall /Install in the TV Stand) Log-like flame effect,can enjoy the flame effect without heat,3 levels of flame brightness to choose Front detachable panel for easy installation. Step-by-step Installation guide is provided to make assembly fun.