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Advice on how to wire a 4 wire RGWY wifi thermostat to an old hvac with no c wire? - Home Improvement Stack Exchange
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EMOS GoSmart WiFi Room Thermostat with App, Programmable Smart Thermostat, Wire Thermostat Compatible with Tuya, Alexa, Google Assistant, Adjustable Differential, 138 x 88 x 33 mm : Amazon.com.au: Home Improvement
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