Pay in 4 interest-free payments of $49.38 Learn more
Ships within 48 hours · Estimated delivery Aug 23 - Aug 28
a compact form factor
ensuring minimal downtime and maximum efficiency
enhancing flexibility in use
Multi-positional design for versatile installation options
Reads pressures from 0 to 230 PSI
Caleffi ZSR103 Zone Valve Relay 3-Zone 120 VAC m-m-manufacturing a compact form factorProduct Description Improve the efficiency of your hydronic heating system with the Caleffi ZSR103, a three zone valve relay. Designed to control both boiler operations and zonal pumps, this device is a must for any residential or commercial space using low voltage thermostats or similar controllers. Controls up to three zones independently. Features LED indicators for easy monitoring and troubleshooting. Compatible with various power inputs: 24VAC
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