Extech Instruments Psychrometer with Nist

Ultra-Silent with Ultrasounds: Ultrasonic air diffusion produces less than 38 dB of noise for a quiet humidification that won’t keep you or your baby up at night
Better, Safer Air: Microporous cartridge thoroughly filters the water and rids it of microorganisms for odorless, purer air
Adjustable Vapor for Multiple Needs: Set humidity level and mist flow to fill up rooms up to 66-82 ft² and combat dry skin, wrinkles, winter cold, and mildew