)Cool,heater,Humidify,PTC heater 2)3Speed,Moving,8 hours Timer 3)RC,Ice box, ... 4)CE,CB certificate 5)OEM,ODM Function instruction of Heater 1. Cool: It will blow out the fresh and cool ... at a glance to find the water level in the box because of the red ball in front of the cooler. Heater with water