This specific model is a close on fall switch

This heating/cooling auto changeover thermostat is a critical field-replacement component designed for seamless integration with Daikin and McQuay equipment

the ICP 1191550 ensures that combustion gases are properly vented

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it is engineered to handle an ambient operating temperature of up to 40°C

Ranco ETC-111000-000 Control Els PW 17895 This specific model is aThe Ranco ETC 111000 000 is an industrial grade single stage electronic temperature control engineered for high precision switching in commercial refrigeration and HVAC systems. Built as a reliable digital upgrade for legacy electromechanical thermostats, this SPDT temperature controller features a broad operating range of 30F to 220F and a fully adjustable 1F to 30F differential. The unit supports multi voltage input (120V, 208V, or 240V AC) and is