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usability - Why do showers have "hot" and "cold" knobs rather than " temperature" and "quantity" knobs? - User Experience Stack Exchange
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20) How hot is my shower? - Measuring and logging shower water temperature with an Arduino - Zonnestroompanelen in Nederland
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Thermostatic Shower Mixer, 38°C Temperature Control Shower Mixer Set 8'' Rainfall Shower System Overhead,Twin Head Handheld Bar Shower Mixer, Exposed Valve Chrome Shower for Bathroom : Amazon.co.uk: DIY & Tools
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