Lindam humidifier allows complete control over the moisture level in your babys room and helps keep mucus membranes soft and opens stuffy noses it works by sending ultrasonic sound waves propelled through the air via its small fan the lindam ultrasonic deluxe humidifier also features no filters compact design variable moisture settings up to 12 hour running time quiet ultrasonic technology 45 litres per day output demineralisation cartridge includedfor hard water areas the humidif