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Controllers

Need help deciding which water heater is right for you? Start here:

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  1. Caleffi Series 257 ISolar Interface Adapter

    Caleffi Series 257 ISolar Interface Adapter

    Caleffi Series 257 Interface Adapter
    $236.14

  2. Steca TR A503 TTR U Controller
  3. Steca TR A501 T U Controller

    Steca TR A501 T U Controller

    Steca TR A 501 T Controller
    $184.57

  4. Steca TR A502 TT U Controller

    Steca TR A502 TT U Controller

    Steca TR A502 TT U Controller
    $232.76

  5. Steca TRO301 U controller

    Steca TRO301 U controller

    Steca TRO301 U controller
    $125.23

  6. Steca TR 0502 Solar Thermal Controller

    Steca TR 0502 Solar Thermal Controller

    Steca TR 0502 Solar Thermal Controller
    $441.07

  7. Steca Suntana Solar Thermal Controller

    Steca Suntana Solar Thermal Controller

    Steca Suntana Solar Thermal Controller
    $271.13

  8. Steca Temperature Difference Regulator

    Steca Temperature Difference Regulator

    Steca STR1 Temperature Difference Regulator
    $107.26

  9. Steca Immersion Replacement Sensor

    Steca Immersion Replacement Sensor

    Steca PT1000 Immersion Replacement Sensor
    $25.00

  10. Steca Overvoltage Protection Unit

    Steca Overvoltage Protection Unit

    Steca Overvoltage Protection Unit
    $82.14

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