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The YORK Q539A1014 Honeywell Thermostat Subbase provides system and fan switching, and mounting for T87F Thermostats. It is designed for use as a non-programmable thermostat switching subbase in a 1 Heat / 1 Cool Conventional System. It operates between 20 to 30 Vac with a heat current of 2A @ 30 Vac max. Obsolete, suggested replacement part: T87N01000.
Honeywell Thermostat Subbase provides system and fan switching, and mounting for T87F Thermostats.
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