EMF Rating
I have been using this product in combination with earplugs for several years and it has saved my sleep, blocking out virtually all noise.<br /><br />Recently,  I've been researching the effects of EMF and purchased an EMF meter to test my office and home environment. I was surprised to find that this device reads similarly to an internet modem or cell phone in use  (close to 100 when biological effects begin to happen at 3). Another user posted a review on this topic in March 2008 with a response from Marpac implying the device is no more harmful than a fridge or other electrical device in the home. That response was not untrue, but it is misleading.<br /><br />The point is that our homes have dangerous levels of EMF because we have filled them with electrical devices which expose our bodies to unnatural levels of EMF that interfere with bodies' natural electrical fields (read the book, "Zapped" by Ann Louise Gittleman). So, the solution is to minimize exposure.<br /><br />One should not sleep right next to their cell phone, fridge or other electrical device -- or this white noise machine. I found that by moving the device about 4 feet away from my pillow, I got a reading below 3 (in nature the reading is near 0). I got it down to 1.5 moving it 3 more feet, but then it wasn't as effective at blocking out noise for me.
Rating: 4 stars