Model # PE153W
Can we program each separate circuit to independently turn on/off at different times of the day and for different amounts of time?
Yes, the timer can be set to run the different circuits at different times.
If there is a power outage will it retain the programmed cycles?
The PE153 does have a battery backup. The capacitor can hold a 4 hour charge. The programs stay locked in even if the power is out longer. You would just need to reset the time.