Product review (5 stars): Excellent -- great for use in apartments and basements!
My mother bought three of these monitors for both herself, me, and my grandmother for the holidays. My grandmother was having issues with the humidity in her apartment in particular. We purchased a cool mist humidifier for her for Christmas and I'm happy to report that this Vicks monitor properly recorded the humidity change both before and after her use of her new humidifier. I think it's a very helpful tool. I've put one in my kitchen, on top of my fridge, to display the general humidity throughout the house as I have an open floor plan. The reference graph is extremely helpful, too. I plan on moving this monitor to my basement in the summer, when we run a dehumidifier, to keep track of the humidity in the basement as I'd always just "assumed" it was working okay before. It will be really great to be able to visually reference it!