Rain Bird ESPSM3 3-Station Expansion Module

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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. Show more