Dear customer,
Please note that the minimum watering duration for scheduled programs is 1 minute. To achieve your desired 15-second cycle, you can use the Manual Run function on the Netro app.
If you need further assistance with the specific steps for Manual Run, feel free to let us know.
Best regards,
Netro Support
Also i don't believe you can do it in the manual run function either, limited to 1 minute increments.
I will forward your request to our R&D and we will dicuss about it. Thanks a lot for your suggestion!
Regards,
Netro Support