RS PRO Solar Power Meter, Solar Power This RS PRO solar power meter is a small keypad device you can use to measure the radiation emitted by the sun and other light sources. It's especially helpful when you need to identify the optimum alignment and positioning of your solar panels. The device features a liquid crystal display (LCD) with a maximum reading of 3999, so you can be sure you can clearly see your measurements. It allows you to display the results in two units, W/m² (Watts per square meter) and BTU (British Thermal Unit), giving you more flexibility. The meter has additional features such as auto power-off and data hold functions to make sure it's easy to use. It also has a long battery life, lasting up to 50 hours. The device comes with a manual, carrying bag and batteries, so you can start using it right away. You can see solar meters like this one commonly used in solar power research, optical laboratories and meteorology. Features and Benefits - AAA battery type - Best accuracy of 10 W/m² - Dimensions of 108 (length) x 48 (width) x 23 mm (height) - Data hold features - Resolution of 1 W/m² - Solar power test type - Weight of 80 g