The iGrow 1400™ can be used to control lights (typically HID) in the greenhouse, based on a Schedule, in accordance of Time duration throughout the day as well how many days in a 2 week period.
Here is a video Link on the iGrow 1400 Light Programming
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 LIGHT then hit Back. Hit NEXT to highlight the MODE -> hit + till you highlight Scheduled then hit next.
If you select Scheduled mode, the following screens have the following format.
On this screen you can see that you have up to three time periods per day to program an ON and OFF time for your lights. Just press the Next or Prev keys to navigate to the time entry you want to modify and then use the + or – key to adjust the time.
The next screen lets you select the days of the week for enabling your lights. This is on a two week schedule.
A “0” means the lights won’t come on for that entire day, a “1” means they will. Once you’ve pressed the Enter button, move the cursor with the Next or Prev keys. You toggle between the 0 and the 1 with the + key.
Here is a LinkConn 1000 View of your Scheduled Light Programming Screen which a provides a more simpler control view.