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DIG Irrigation LEIT-1  Solar Powered Irrigation Controller ONLY

Spec Sheet  Install Manual

DIG’s LEIT 1™ single-station solar powered controller with an actuator is used to retrofit a 3/4” or 1” manual anti-siphon valve. Powered by a photovoltaic module with a patented microelectronic energy management system, the LEIT 1™ requires no batteries or direct sunlight to operate and it is used ...above grade in any location where there is ambient light. Distinguished among the LEIT-1™ features are 20 preset monthly historical Evapotranspiration (ET) programs for spray heads and drip irrigation, with an editing feature that can be used as part of the controller programming.


  • No direct sunlight required
  • Environmentally friendly with no backup battery or AC power necessary; uses clean, renewable solar power
  • Power is provided by an internal, high-efficiency photovoltaic module and microelectronic energy management system fueled by ambient light
  • Simple, icon-based intuitive programming
  • Simple Smart™ historical ET feature automatically adjusts irrigation schedules monthly
  • Power level meter indicates the approximate charge (energy available)
  • Used to retrofit a 3/4″ or 1″ manual anti-siphon valve
  • On activation, the controller indicates if irrigation is set to water for the day and if any of the additional programming features are active
  • Daily and monthly programming restriction options to comply with city and municipal watering restrictions
  • Semi-automatic and manual operation with timed countdown to off
  • Program On/Off button allows the user to turn off the controller and reactivate it as desired
  • Retractable coiled cord for easy programming and review
  • Utilizes RoHS compliant components
  • Reset option allows erasing of all programs to default settings except time, day and date
  • Non-volatile memory holds programs indefinitely without batteries, except date and time
  • Completely waterproof (IP68)
  • Rain sensor connection included
  • Built-in flow control with internal or external manual bleed override for Manual ON/OFF
  • Rugged, reinforced self-cleaning diaphragm provides reliable operation even with contaminated water
  • Internal bleed via the solenoid for system checkup and testing
  • Captured solenoid plunger and spring for easy maintenance
  • Three-year warranty

Programming Features

• Five start times per day provide added flexibility for any type of watering application including sandy or clay soil

• Valve duration up to six hours in one-minute increments

• Custom programming schedules using weeks, odd days, even days or intervals of 1-30 days utilizing a yearly calendar with leap year

• Twenty historical ET programming presets with 10 climate zones, 10 for drip irrigation and 10 for spray systems

• Monthly seasonal adjustment that modifies the watering duration from 5% to 200% in 5% increments without modifying the controller’s program duration

• Irrigation suspension (rain delay) for up to 99 days; resumes irrigation automatically

• Rain Delay with up to 99 days with auto restart


Controller Specifications:

  • Power source: ambient light (PVM)
  • Controller power input: 3,000 -100,000+LUX
  • Seven keypad buttons with integrated liquid crystal display
  • Temperature range: 38°F to +140°F (3°C to +60°C)


1 Zone

Operating Pressure: 10-150 PSI (.7-10.5 BAR)
Temperature Range: Up to 170°F (76.7°C)

Controller only: 4.214 in. H x 5 in. L x 3.6 in. W

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