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Weathermatic SL1624 - SmartLine 24 Zone Controller

  • SL1624 - 24 Zones
  • External transformer with plug and play barrel connector
  • Large LCD display
  • 2 run modes: Standard mode runs user input zone run times; Auto Adjustmode requires SLW Series On-Site Weather Station to calculate weather based run times

Item #: SL1624
Availability: In Stock
Usually ships In 1-2 Business Days
Retail: $716.57
Price: $429.94

You Save: $286.63 (40.0%)

    In Stock Quantity: 3

    The Weathermatic SmartLine® irrigation controller is designed to maintain the health and quality of your landscape while conserving water to minimize your operation costs. The SmartLine® controller can perform BASIC timed watering schedules or, with the addition of the optional SLW Series OnSite Weather Sensor, the controller’s Smart mode will analyze “on site” weather data to automatically set optimum watering times for each zone, based on Weathermatic’s patented methodology. Smart mode will also save water by automatically setting run and soak cycles to minimize runoff.

    You can now expand your Weathermatic SmartLine controller to maximize water savings, improve efficiency and improve landscape beauty. After ensuring you have the modules to accommodate all your zones, add an on-site Weather Sensor that takes into account rain andfreeze, but also adjusts for temperature and other conditions that impact the need for supplemental watering. Adding the SmartLink aircard gives you reliable cellular connectivity and access to the SmartLink web application so you can program your controller and manage it from from your computer, tablet or smartphone. This capability also includes water use reporting so you get real-time visibility to the dramatic water savings from Smart irrigation and email alerts for indications of any issues that will impact water savings and landscape beauty.


    • External transformer with plug and play barrel connector
    • Large LCD display
    • 2 run modes: Standard mode runs user input zone run times; Auto Adjustmode requires SLW Series On-Site Weather Station to calculate weather
    • based run times
    • Rain/Freeze sensor bypass/active button displays sensor status with tricolor LEDs (red indicates sensor is prohibiting irrigation; orange indicates an extended rain delay; green indicates normal operation)
    • 4 programs: A, B, C; program D can operate concurrently
    • 8 start times per program
    • Nonvolatile memory and real time clock/calendar to retain programs and current date and time – no battery required
    • Zone run times from 1 min. to 9 hrs. 55 min. with operation countdown displayed in hours, minutes, and seconds
    • Watering day selections of custom days of the week, odd/even, or interval days (1 – 30 days)
    • Omit settings: omit time of day window, omit day(s) of week, and omit up to 7 calendar dates
    • Seasonal % adjust by program, by month for simple year round water budgeting (monthly percentages overridden in Auto Adjust mode)

    • Diagnostic test function using on-board multi-meter displays transformer voltage; milliamp measurement for each zone
    • Fault review displays all faults, including open and shorted zones
    • Built-in valve locator function for locating hidden valves by simply listening for the audible chatter of the solenoid created by a unique electrical frequency (U.S. Patent No. 7,406,363)
    • Review menu displays accumulated ET deficits by zone (in inches) and corresponding zone run times for the next available watering day
    • Review menu displays maximum run time and minimum soak time used during Auto Adjust mode
    • Review menu displays temperature readings (daily high/low) for previous 5 days
    • Review menu accumulates total run times by zone from the last reset date
    • Rain delay of 1 – 7 days may be selected (to pause and automatically resume operation)
    • SLW Weather Station extended rain delay programmable from 0 – 99 hours
    • Run/Soak cycles allow setting of maximum run time and minimum soak time by program for use in Standard mode only
    • Zone-to-zone delay programmable for 1 min. - 3 hrs. to accommodate slow closing valves and recharging of water supply
    • Master valve timing sequence with zone-valve programmable by “On Delay” (1 sec. – 1 min.; 2 sec. default) and “Off Delay” (1 sec. – 3 min.; 5 sec. default) to allow for line fill and slow-closing valves
    • Master valve/pump start operation assignable On/Off by zone
    • Clear program function to selectively delete an individual program
    • Clear all function to delete all programs
    • Backtrack stored program feature allows contractor to easily store a default program and retrieve the saved program in the event a customer improperly reprograms the SL800

    • ZIP Code input (5 digit) or Latitude input (±60° from EQUATOR) establish location of site for solar radiation calculation
    • Sprinkler type input allows selection for zone sprinkler type (SPRAY, ROTOR, DRIP, BUBBLER) with preset precipitation rate or specific input of the zone precipitation rate (.2 – 3.0" per hour)
    • Plant type input allows selection for zone plant type (COOL TURF, WARM TURF, SHRUBS, ANNUALS, TREES, NATIVE) with preset crop factors or specific input of the zone crop factor (10 – 300%)
    • Soil type input allows selection for the soil type (CLAY, SAND, LOAM) and slope (0 – 25°) for the purpose of automatically calculating a run/soak period to virtually eliminate run off
    • More/Less is settable by zone (-50% to +25%) for the purpose of fine tuning Auto Adjust run times to accommodate factors like shade, wind, and sprinkler inefficiencies

    • Manual zone operation of a single zone (1 min. to 9 hrs. 55 min.)
    • Manual test runs each zone with zone run times from 10 sec. up to 10 min.
    • Push button manual start of a program from control panel

    Manufacturer: Weathematic

    Model: SL1624

    Dimensions: 9-1/8" W x 10 ½" H x 4" D

    Number of Stations: 4,8,12,16

    Number of Programs: 4

    Number of Start Times: 8 per program

    Run Time: 1 Minute to 9 Hours and 55 Minutes

    Programming Options: Days of the Week; Odd/Even; Interval

    Location: Indoor or Outdoor

    Literature: SL1600 Product Literature, SL1600 Manual