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Rain Bird ESP-SMT Sprinkler Timers

Proving that extra smart can also be extra simple.
Other Smart Controllers claim simplicity and precision; the Rain Bird ESP-SMT Smart Control System delivers. Combining the proven simplicity of the Extra Simple Programming (ESP) controller family with the accuracy of weather-based control, this innovative system is engineered to save valuable time, money and water.
  • Rain Bird ESPSM3 Module
    Rain Bird ESPSM3 Module
    Save 36%
    Original Price $81.16
    Current Price $52.17
    Rain Bird

    Rain Bird - ESPSM3 - 3-Station Add-On Module

    In Stock (136)

    Rain Bird 3-Station Add-On Module Rain Bird ESPSM3 With 48-station capacity, four independent programs and up to eight start times for each stati...

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    Original Price $81.16
    Current Price $52.17
    Save 36%
    In Stock (136)

Instant rainfall shut-off and useable measurement

A Smart Controller should be smart enough to account for rainfall, right? Not always. In fact, most Smart Controllers simply suspend irrigation when it rains, without accurately measuring rainfall. By comparison, the ESP-SMT not only suspends irrigation, it measures instantaneous rainfall amounts, determines the effective rainfall and calculates exactly how much to adjust your watering schedule to prevent over-watering and under-watering.

The proven accuracy of weather-based scheduling

Rain Bird pioneered weather-based control systems for golf courses over 25 years ago. Drawing on the industry-leading precision of these larger, more sophisticated systems, the ESP-SMT makes Rain Bird weather-based control simple and affordable for homeowners like you. By self-adjusting to the landscape's changing water needs, it eliminates the programming errors and guesswork of a time-based system.

Expandable modular design

The Rain Bird ESP-SMT can grow with your landscape, easily expanding from 4 stations up to 13 stations with the addition of optional hot-swappable expansion modules.

Zone-specific water calculations

Different plants have different watering requirements. That's why the ESP-SMT customizes each zone's irrigation schedule. It factors in location, soil type, landscape slope, plant type/density, sun exposure, sprinkler type and root-depth requirements. Based on this zone-specific data, the ESP-SMT controller optimizes the irrigation schedule to promote lush, healthy plant material in each part of your yard, while substantially reducing water waste and runoff.




    • Width: 10.7"
    • Height: 7.7"
    • Depth: 4.4"

Sensor (Largest Area Across)

    • Width: 6.0"
    • Length: 8.8"
    • Height: 5.9" (includes Solar Shield)

Mounting Bracket (Mounted on Vertical Surface)

    • Maximum reach: 7.0"

Electrical Specifications

    • Input Required: 120VAC +/- 10%
    • Output: 25.5VAC 1A
    • Surge Protection: Primary input side has (2) built-in MOV's (metal oxide varistor) to protect circuitry. Output side has(2) built-in MOV's for each valve station.
    • Power back-up: Lithium coin-cell battery maintains time and date while non-volatile memory maintains the schedule.
    • Multi-valve station capacity: Up to two 24VAC, 7VA solenoid valves per station plus a master valve.

Rain Bird Irrigation Controllers

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