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Rain Bird ESPSM3 three‑station expansion module, front view showing station terminals and module faceplate with connector slots.

Rain Bird ESPSM3 3-Station Expansion Module

Brand: Rain Bird
Save 28%
$88.00
$63.80
SKU ESPSM3
In Stock (149)

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The Rain Bird ESPSM3 is a hot‑swappable 3‑station expansion module that increases the zone capacity of compatible ESP modular controllers without interrupting irrigation schedules.

  • Adds three stations: Each ESPSM3 provides three additional valve stations to Rain Bird ESP modular systems.
  • Hot‑swappable installation: Install or remove the module while the controller remains powered—no need to stop watering.
  • Wide compatibility: Works with ESP‑M, ESP‑Me, ESP‑SMT and ESP‑SMTe series controllers (verify your model).
  • Retains programming: Built‑in lithium battery and nonvolatile memory preserve time, date and schedules during power interruptions.
  • Compact, slide‑in design: Fits any available expansion slot; modules can be stacked to expand capacity further (controller limits apply).
  • Technical specs at a glance: Model ESPSM3 (MFG F38200), 120 VAC, 0.06 A, dimensions roughly 10.7" W x 4.4" D x 7.7" H.

Ideal for homeowners and installers who need to grow an irrigation system incrementally, the ESPSM3 offers a low‑downtime, cost‑effective way to add zones. Always confirm controller compatibility and total station limits before installing multiple modules.

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Frequently Asked Questions

What controllers are compatible with the ESPSM3 module?
The ESPSM3 is compatible with Rain Bird ESP‑M, ESP‑Me, ESP‑SMT and ESP‑SMTe series controllers. Verify your exact model before installing.
How many stations does the ESPSM3 add and can I use multiple modules?
Each ESPSM3 adds three stations. Multiple modules can be used to expand capacity, but check your controller’s maximum station limit first.
Can the ESPSM3 be installed without powering down the controller?
Yes; the ESPSM3 is hot‑swappable and can be installed or removed while the controller remains powered, minimizing downtime.

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