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1St L

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1St L.S Locksmith handles locksmith services in Los Angeles with professional support for lost keys, jammed locks, office rekeying, and convenient mobile lock solutions.

Question on Smart Thermostat Wiring

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Question on Smart Thermostat Wiring Our older thermostat only has four wires and no C wire. The smart model I bought says it needs one. Is an adapter safe to use, or does that cause problems with the AC down the road? Trying to avoid a wiring mistake