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  • Side angle of SLM4 expansion module illustrating the slide-in guide rails, plug connector, and durable weather-resistant housing.
    Front view of Weathermatic SLM4 SmartLine 4-zone expansion module showing label, connector pins, and mounting tabs for SL1600 controllers.
    Save 28%
    $101.59
    $73.65
    Weathermatic

    Weathermatic SmartLine SLM4 4-Zone Expansion Module

    In Stock (48)

    The Weathermatic SmartLine SLM4 is a 4-zone expansion module that increases the station capacity of compatible SmartLine controllers. Engineered fo...

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    $101.59
    $73.65
    Save 28%
    In Stock (48)