Professional Light Meter LX802 for Hydroponics, Greenhouse, Gardening, Architecture, Lighting Four Measurement Ranges:0 to 200 / 2,000 / 20,000 / 200,000 Lux or 0 to 20 / 200 / 2,000 / 20,000 Footcandle ( FC ) Resolution: 1 Lux / 1 Footcandle Accuracy: 3.0% , easy switch between Lux and FC Memory Data-hold Function / Peak Light Intensity Function Battery: standard 1x 9 Volt (included). Storage case included.