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This is one element of a 'smart heating' approach.
Download small medium full - FREE to download and use! (c) Damon Hart-Davis
(Energy Matters): thermostatic radiator valve programmable terrier i30 with LCD display buttons and thumbwheel screw on replacement for dumb TRV 1 DHD.jpg
D=2012-11-15 [Nov 15, 2012]; S=4MB, 4000x3000; T=JPEG image [MIME:image/jpeg].
Key: D= file date of exhibit; S= size in bytes, XxY pixels, etc; T= type of exhibit; L= location/time or viewpoint of exhibit (if known).
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