Which "sleep mode" is best for this purpose?

[tipo1000]

The application is reading sensors every 15 seconds and sending data to cloud.
Which "sleep mode" is best from power consumption perspective?

- Modem-sleep, automated?
- Modem-sleep, forced?
- Light-sleep, automated?
- Light-sleep, forced?
- Deep-sleep, forced?

Thanks,
Timo

[blubb]

If you send every 15 seconds, it is better to keep the wifi connection. How long does it take to reconnect? Try it.

You also need a timer, so modem sleep would be the best solution (the clock is halted in the higher sleep modes).