This is a brand new cem dt-1307 ce certified industrial solar power meter from ruby electronics. Solar meter is a device used to measure solar sunlight power. This sunlight energy meter measures the solar power in either watt or btu accurately. This meter is in compliance with safety standard en 61010-1 related to electronics measuring instruments. This device is compact and portable. It comes with batteries pre-installed. This digital meter also comes with a heavy duty carrying pouch for your convenience.