Buy from Amazon.com : http://fave.co/1BZg2hv <br /><br />Professional Light Meter LX801 for Hydroponics Greenhouse Gardening Garden Light Intensity<br /><br />Product Description : <br />Digital Light Meter for sun light fluorescent light and grow lights such as metal halide lamps <br />Great tool for hydroponics growing and garden make sure all your plants receive the right amount of light <br />Measures light intensity up to 50000 Lux <br />Accuracy 50 Resolution 1 Lux <br />Battery Standard 9V storage box both included
