Posted by a reviewer on Amazon

Hopefully this will cure the little critter of its malady at least it did for mine

Posted by a reviewer on Amazon

Of course after awhile you get the idea of dangerous times and better times

Posted by a reviewer on Amazon

Willing to pay more for a better reader but next step up is very expensive and not portable

Posted by a reviewer on Amazon

It only shows whole numbers but thats good enough for me the side shows low to extreme levels so if you use it alot you can judge if it is towards the high side of the number or low sidefirst time using it i got a level 8 readingglad i bought this it seems our ozone isnt working that good now dayssimple to use hold button for 2 seconds to turn on and it gives a readingtap button to read again thats about itruns off cr2032 watch batteryjust got a 4 pack for around 10 should keep it running for along time off one battery doesnt seem to use much poweri like itpoint the sensor on top directly at the sun for an exact readingif not it gets a low reading everytime