Features Heater heats up the air in the inlet, and heated air vaporizes the water in the tank, the water vapor goes through the sponge soaked in biological disinfection enzyme to kill the bacteria in the water vapor, the air from the outlet is normal temperature because the heat loses during circling. honey-comb type Sponge: water vapor effectively goes through and killing the bacteriaMulti-optional humidification function: quiet, safe mode and standard…..temperature can be controlled automatically in each mode.High humidity-sensor module: accurately sensor and control the humidity.. low-humidity indication after power-off. No-water alarm and automatic cut-off function. multiple temperature-limit protection anion PowerOne-way AC110V/230V 50/60HZTypeMild-temperature humidifierModequietnon-stophighautomaticsave modeHumidification amount200350350350120Idle power consumptionless than 1Power consumption18023523523516Noise levelmotor speed550550/800550/800550/800550/800Humidity control50-6065-7560-7050-6540-55ProtectionPTC + NTC + Temperature-limit switch + no-water protectionApplicable area20-30