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Control Type: Coiled Bulb
making it suitable for various applications requiring efficient fluid control
5 size for electrical connections
Designed for reliability across a broad range of operational conditions
Caleffi ZSR104 4 Zone Expandable Switching Relay with Priority voomi_id_3501 Control Type: Coiled BulbProduct Description The Caleffi ZSR104 is an expandable switching relay designed to control up to four hydronic heating zones with additional priority zoning capabilities. This module is ideal for simplified zoning applications where multiple zones require individual control. Integrates with low voltage thermostats or controllers. Features high capacity transformer options and multiple zone control. Fully equipped with LED indicators for system
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