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DIG LEIT 1 Solar Powered Controller with Anti-Siphon Valve

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DIG LEIT-1ASV Solar Powered Controller with Anti-Siphon Valve

DIG’s LEIT 1™ ASV single-station solar powered controller with a two wire DC latching solenoid is available on a 3/4” or 1” heavy duty anti-siphon valve for use in residential and commercial applications. 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 use above grade in any location where there is light. Distinguished among the LEIT-1™ features are twenty 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.

Note: Install the unit 6-12 inches above the highest downstream sprinkler head

Programming Options

  • Custom programming schedules with a weekly calendar, odd days, even days, or intervals from one to thirty (1-30) days utilizing yearly calendar with leap year
  • Five start times per day
  • Durations up to 5 hours and 59 minutes in one-minute increments
  • 20 preset historical ET programs available for 10 climate zones, with 10 for drip irrigation and 10 for spray heads, to use with any irrigation setup and including the option to review the new calculated duration
  • Monthly seasonal adjustment with option to reduce the program duration setting to 0 or to increase it up to 200% in 5% increments without modifying the controller's program duration; also can be used to fine-tune the preset ET program for each month
  • Irrigation suspension for up to 99 days with auto-restart; resumes irrigation automatically
  • Program Off button allows the user to turn off the controller and reactivate it as desired
  • Manual On/Off button with semi-automatic feature utilizing the program runtime and shows the time left to run with quick override
  • Daily and monthly programming restriction feature allows controller to bypass irrigation schedules. Can be used to comply with city and municipal watering restrictions

Product Details

  • Environmentally friendly with no backup battery or AC power necessary; uses clean, renewable solar power
  • Power is provided by an internal, ultra-high efficiency photovoltaic module and microelectronic energy management system fueled by ambient light
  • Simple, icon based intuitive programming
  • Simple Smart™ historical ET feature for spray heads and drip irrigation automatically adjusts irrigation schedules monthly
  • Power level meter indicates the approximate charge (energy available)
  • 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
  • Internal bleed via the solenoid for system checkup and testing
  • Captured solenoid plunger and spring for easy maintenance
  • Efficient plastic anti-siphon valve with high flow
  • Three year warranty

Controller Specifications

  • Type: DC
  • Body: IP68
  • Number of stations: two, four, and six and includes master valve and rain sensor
  • Power source: two AA alkaline batteries (not included)
  • Power input per valve: constant 11 volt
  • Seven keypad buttons with integrated liquid crystal display
  • Wire configurations: up to six 18 inch red wires labeled for each valve, one black wire for master valve, two white wires for common and one looped yellow wire for sensor connections
  • Temperature range: 38° F to +130° F (3° C to +54° C)
  • Sensor connection: normally closed 6 inch (15 cm) looped yellow wire (16 AWG)
  • Materials: high impact plastic
  • Used with S-305DC 7-12 VDC normally closed, two-way latching solenoid and 30-92X adapters


  • Valve type: anti-siphon valve with flow control
  • Valve sizes: 3/4 inch to 1inch NPT or BSP
  • Valve inlet and outlet: female pipe thread (FNPT)
  • Operating pressure range: 20-150 PSI (1.4 -10.5 BAR)
  • Bonnet solenoid thread: 11/16 inch-12 UN
  • Diaphragm assembly: self-cleaning supported with guided seal
  • Flow rate: .25 to 25 GPM (.95-95 LPH-0.057 to 5.68 m3/h)


  • Controller housing: high impact plastic
  • Valve bonnet: nylon reinforced
  • Valve housing: PVC
  • Diaphragm: EPDM reinforced
  • Solenoid housing & retainer: nylon reinforced
  • Spring and plunger: stainless steel 430F
  • Bonnet bolts: Stainless Steel
  • Plunger rubber cap: EPDM
  • O-ring: Buna-N
Commercial, Light Commercial
Enclosure Type:
Controller (SP)
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