ZSR104 | Zone Pump Relay 4 Zone | Caleffi Type_4 Prong Aluminum Hand Knob The LightBlue color indicator provides

The LightBlue color indicator provides easy visual confirmation of the switch's status

It meets industry standards and is built to withstand demanding conditions

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ensuring a secure seal when the solenoid is de-energized

76 MM Aluminum Handwheel: Jergens 22752The Jergens 22752 handwheel is a high-quality component designed for industrial applications

ZSR104 | Zone Pump Relay 4 Zone | Caleffi Type_4 Prong Aluminum Hand Knob The LightBlue color indicator providesCaleffi Zone Pump Relay (ZSR104)The Caleffi ZSR104 Zone Pump Relay is designed to control up to four (4) zone pumps. Each zone can be independently controlled, allowing for maximum flexibility and energy efficiency. The ZSR104 is ideal for use in hydronic heating and cooling systems. **Key Features:** * Controls up to four (4) zone pumps * Independent zone control for flexibility and energy efficiency * Suitable for hydronic heating and cooling