Zone Control Relays
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Caleffi Single Zone Control Relay - ZSR101 Caleffi Zone Control Relay. ZSR101

Caleffi Z-one Single zone switching relay operated by low voltage
thermostats.

Our Price: $65.00
Caleffi 3-Zone Control Relay - ZSR103 Caleffi Zone Control Relay. ZSR103

Caleffi Z-one 3-zone pump and boiler operating control for multiple zone hydronic heating systems.

Our Price: $136.00
Caleffi 4-Zone Control Relay - ZSR104 Caleffi Zone Control Relay. ZSR104

Caleffi Z-one 4-zone pump and boiler operating control for multiple zone hydronic heating systems.

Our Price: $158.00
Caleffi 6-Zone Control Relay - ZSR106 Caleffi Zone Control Relay. ZSR106

Caleffi Z-one 6-zone pump and boiler operating control for multiple zone hydronic heating systems.

Our Price: $191.00
Caleffi 3-Zone Valve Relay - ZVR103 Caleffi Zone Control Relay. ZVR103

Caleffi Z-one 3-zone valve relay and boiler operating control for multiple zone hydronic heating systems.

Our Price: $106.00
Caleffi 4-Zone Valve Relay - ZVR104 Caleffi Zone Control Relay. ZVR104

Caleffi Z-one 4-zone valve relay and boiler operating control for multiple zone hydronic heating systems.

Our Price: $125.00
Caleffi 6-Zone Valve Relay - ZVR106 Caleffi Zone Control Relay. ZVR106

Caleffi Z-one 6-zone valve relay and boiler operating control for multiple zone hydronic heating systems.

Our Price: $158.00
Caleffi Zone Control Expansion Transformer NA10343 Caleffi Zone Control Expansion Transformer - NA10343

Caleffi expansion transformer for the ZVR Series multi-zone valve relay and boiler operating controls.

Our Price: $43.00