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SPECLED: production of professional LED modules for plants and grow lights. True PPFD, original Osram & Samsung LEDs, MeanWell drivers. DIY solutions.
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Heatsink Area Calculator by Geometric Profile (Dimensions)
Our online calculator will find the exact area of a finned aluminum radiator based on your dimensions. It even draws a profile diagram!
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Calculating the position, performance and payback of solar panels
How many kWh a solar panel produces in your city and when it pays back. 21 regions, optimal tilt and azimuth, tariff, grant, monthly chart.
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Sun Path & Natural PPFD Simulator
How much light does the sun actually give at your latitude? Drag the time slider to see PPFD, DLI and sun elevation. Compare summer vs winter. Free, no signup.
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