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 Botanic Garden >> Gardening >  >> Question and Answer >> Irrigation

Hydrotek 2120 Timer Knob Broken: Intermatic Timer Parts & Digital Upgrade

Hydrotek 2120 On/Off/Auto Switch Broken: It's an Intermatic Timer

The timer is a rebranded Intermatic mechanical timer. Controls 220V pump + transformer to indexing valve.

Parts Source

Search "Intermatic timer knob" or "Intermatic 2120 replacement knob". Widely available online.

Digital Upgrade Option

Replace mechanical timer with digital irrigation controller (Hunter, Rain Bird, Orbit) + pump start relay for 220V pump.

  • Gains: Multiple programs, rain sensor, seasonal adjust, WiFi.
  • Must wire relay coil to controller "P/MV" terminal.

Caution

220V pump wiring requires licensed electrician in most jurisdictions.

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