Electric Fairplace with 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. 2 installation methods:Built in wall with surround trims & Insert to mantel from the front directly. 4 flame color and ember bed brightness can be adjust with 5 levels,flame speed can be adjust with 3 levels Timing function can set the time from 1 to 9 hours,11 temperature settings ,64F to 82F,ON meas heater keep working,can enjoy the 3D flame with or without heat Two power supply connection methods: 1, Hardwired installation design 2. Simple plug -in cord.Users can choose the appropriate power connection method based on actual needs. Realistic 3D LED flame effect with realistic crackling sound,that's just what a wood burning fireplace looks like