RH Designs ProcessMaster II:

Up to 8 programmable sequences, dimmable light, toggle percentage/time, overrun if required (for N+ development, audio signal every 30 seconds, developer temperature compensation if desired and a footswitch.

The kitchen timer is back in the kitchen, the metronome in the music room (well to be truthful, in the camera bag for long exposure timing)

It's so good to regain confidence in the pitch dark that the timer is working and that you have pressed the right button; not an uncommon panic attack for me in the kitchen timer days.

Recommended.

Regards - Ross