Weathermatic 120 VAC/60 Hz 4-Zone Base Model-Expandable to 16 Zones
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<b>[Product Information]</b><br>
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<li>4-zone base model expandable to 16 zones using SLM4 4-zone hot-swappable modules</li>
<li>Large backlit LCD display</li>
<li>4 programs: A B C; program D can operate concurrently</li>
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