Can I control the amount of time between Powering Off and Powering On the Power Stone™ RPS II ?

YES, if you are concerned about allowing your equipment to power down, you can make 2 phone calls. One to power off the attached device, and then another call to power on. There is a very simple sequence of tones you would send using the keypad of your telephone to do this. To Power ON the RPS II, telephone and enter ##88 to gain access to the device. Then hit 011 to power ON and 80 to Save and Hang Up.To Power OFF, follow the same procedure but hit 010 on your touch tone keypad.