I've got one which I use to control my power amp, and assorted items like the turntable, phono preamp, Squeexebox, etc.
While it serves its purpose, it do not believe it has any sort of delay mechanism built in. It uses the standard 5V trigger, I believe, as well as the rather industry-standard 1/8" plug, which is found on other switching devices from 3rd party vendors.
The delay feature would have to be supplied either by the controlling device, a C2200 in my case, or an outboard unit connected between the controlling device and the PC-4.
Check the C2200 manual, downloadable online from Mac, for some suggestions on how to use it with that pre - but delay is not one of the options there.
Cheers,
David