Honeywell RTH8500D User Manual

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Other Patents Pending
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The RTH8500D Thermostat provides electronic control of 24 Vac heating and 
cooling systems or 750 mV heating systems.

For assistance with your Honeywell product, please visit 
www.honeywell.com/yourhome or call Honeywell Customer Care 
toll free at 1-800-468-1502.