HIGH AMBIENT WORKING 52 C-KEEP YOU COOL EVENT AT A TEMPERETURE AS HIGH AS 52 C SLEEP MODE-ENSURES A COMFORT COOLING EXPERIRNCE BY INCREASE THE TEMPERATURE BY 1 C PER HOUR FOR FIRST TWO HOURS THEN HOLDIND IT STEADY FOR NEXT FIVE HOURS AND FINALY SWITCHING OFF THE AC. PM 2.5 FILTER-CLEANS AIR BY FILTERING OUT PM 2.5 PARTICLES AND OTHER POLLUTANTS. FOLLOW ME-GIVE YOU QUICKER AND TARGETED COOLING NEAR THE REMOTE EVEN IN A BIGGER ROOM.