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OpenTRV prototype 20130214 PICAXE 18M2 microcontroller DS18B20 temperature sensor directly driving central heating boiler furnace and FHT8V TRV via RFM22 radio at 868MHz to regulate temperature in closed loop breadboard prototype 3 DHD.jpg
D=2013-02-14 [Feb 14, 2013]; S=4MB, 4000x3000; T=JPEG image [MIME:image/jpeg].
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