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Disconnect power before beginning installation. Must be installed by a certified electrician. Read these instructions carefully. Failure to follow these instructions can damage the product or cause a hazardous condition. Need Help? For assistance with this product please visit or call Honeywell Customer Care toll-free at 1-800-831-2823. Installation Guide Installation Guide The equipment interface module (EIM) allows you to control a baseboard heater, a convector or a fan-forced heater in a 120-