iGrow 1400 - Trigger Irrigation Programming
With the iGrow 1400, The Irrigation external trigger option is designed to turn on your irrigation valve(s) from an external switch such as a Momentary wall switch.
The external trigger input should already be assigned in the Setup Inputs screens. See Setup Inputs Section for more details.
Note: The iGrow 1400™ digital input has an internal 10K pull up resistor to +3.3V. If the external trigger input is pulled low by an external device for more than 50 msec then the input is deemed valid.
To program simply hit Enter/Menu -> Program Equipment -> Hit Enter/Menu to highlight Output -> NEXT to scroll over to Equipment type field -> hit + till you display IRR then hit Back. Hit NEXT to highlight the MODE -> hit + till you highlight Trigger.
The iGrow 1400™ enables the external trigger only between the Start and End times. These two time values can be astronomically adjusted with respect to either sunrise or sunset.
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Attached, you will find the iGrow 1400 manual.