Weathermatic 4-Zone Module for Pl1600 and Sl1600
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<b>[Product Information]</b><br>
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<li>2 zone hot swappable module</li>
<li>Fits weathermatic smartline 800 controller</li>
<li>This module adds four zones at a time to a weathermatic smartline Sl1600 and proline Pl1600</li>
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