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Rain Master TW-D-1 single-station TWICE 2-wire decoder, compact weather-resistant housing with model label and 24VAC rating (front view).

TW-D-1 Rain Master 1-Station TWICE 2-Wire Decoder, 24VAC

Brand: Irritrol
Save 27%
$320.09
$232.07
SKU TW-D-1
In Stock (12)

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The TW-D-1 is a single-station, 24 VAC TWICE two-wire decoder engineered for Rain Master irrigation systems. Designed for straightforward two-wire installations, this addressable decoder brings dependable valve control and in-field diagnostics to commercial and residential irrigation setups.

  • Single-valve AC decoder for one station — compact, weather-resistant design for inline valve mounting.
  • TWICE two-way communication protocol ensures controller-to-decoder feedback and diagnostic reporting.
  • Addressable decoder with unique ID — program individual decoders from the controller interface for precise station control.
  • LED status indicators show command activity and valve power for fast troubleshooting on-site.
  • Automatic shutoff if communication is lost; a short in the line will disable affected valves to protect the system.
  • Works with Rain Master Eagle and E-series controllers that support TWICE protocol; integrates easily into existing two-wire loops.

Ideal for retrofit or new two-wire systems, the TW-D-1 reduces wiring complexity while improving serviceability and uptime. Contractors and landscape professionals will value the combined simplicity of two-wire installation with addressable control and visible diagnostics that speed commissioning and maintenance.

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Frequently Asked Questions

What does the TW-D-1 decoder control on my irrigation system?
The TW-D-1 is a single-station (one valve) decoder that allows addressable control of that valve over a two-wire TWICE loop.
How is the TW-D-1 wired and installed?
Install inline at the valve using the two-wire TWICE loop; minimal field wiring reduces trenching and simplifies retrofit jobs.
Does the decoder provide diagnostics or status feedback?
Yes. The decoder has LED indicators and two-way communication so the controller can report status and the decoder can signal faults.

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